Strengthen the Argument Questions | CLAT Logical Reasoning

📑 On this page

⚡ The 20-second answer

A strengthen question asks which new fact, taken as true, makes the conclusion more likely. Find the gap between evidence and claim, then pick the option that closes it, usually by ruling out a rival explanation. The #1 trap: an option that cheers for the conclusion but adds no evidence.

🎬 The 30-second story

The 11 pm Wi-Fi curfew

“Since the warden cut Wi-Fi at 11 pm, our mock average jumped from 78 to 86!”

📶

Meher

Meher's hostel, one month into the curfew.

“Proof it works. Also, everyone hates it, so it must be working.”

📢

Aarav

Aarav tries to 'strengthen' the case.

“Hate isn't evidence. Did anything else change?”

🖊️

Zoya

Zoya uncaps the red pen.

“The hostel next door kept Wi-Fi all night. Same coaching, same mocks. Still 78.”

🏠

Meher

The fact that actually helps.

Tara's verdict: Aarav added noise; Meher added evidence. The argument assumed nothing else explains the jump. A twin hostel with the same coaching and mocks, minus the curfew and the jump, knocks out the rivals. Strengthening means closing the gap, not cheering.

How does CLAT word strengthen questions?

Real CLAT stem	What it really asks	First move
“…most strengthen the main argument of the passage?” (2024 Q92)	Support the big conclusion	Write the main point in one line
“…most strengthen the author's arguments for why Indian exports may not be able to take advantage of a falling rupee?” (2023 Q109)	Support one sub-claim	Find that sentence and its reason
“[quoted line]… In the context of the statement, which… strengthens the author's opinion?” (2021 Q112, 2022 Q121)	The line is your conclusion	What does it assume is good?
“…most closely supports the fact that…” (2022 Q115)	Evidence for a claim	Same as strengthen

→ scroll to see more

What does 'strengthen' really mean?

Every argument has evidence, a claim and an unstated bridge between them. The evidence is already accepted, so the bridge is the only place a new fact can work.

🗺️ Argument map

The hostel argument, mapped

Premise 1

The hostel brought in an 11 pm Wi-Fi curfew.

Premise 2

The mock average rose from 78 to 86 in a month.

↓

🌉 Hidden assumption (the bridge)

Nothing else (easier mocks, a new teacher) explains the rise.

↓

🎯 Conclusion

The curfew raised mock scores.

What each new fact does

＋
The next-door hostel, same coaching and mocks, no curfew, stayed at 78.
Strengthens · hits the gap — rules out every shared rival
＋
Residents now sleep 90 minutes more a night.
Strengthens · hits the gap — shows how it works
−
The coaching centre switched to easier mocks this month.
Weakens · hits the gap — a rival cause
∅
Most residents dislike the curfew.
No effect · hits the conclusion — popularity isn't scores

Green shores up the bridge; grey floats past; red belongs in a weaken question.

📌 “If true” means you don't argue with the option

Accept every option as fact and ask: would I now believe the conclusion more? You need a nudge, not a proof. A small push wins if the rest do nothing or hurt.

How do you solve a strengthen question in 60 seconds?

1
Lock the target
Strengthen, not weaken. Main argument or one sub-claim? Underline it.
2
Map the gap
Name what the author takes for granted: “nothing else caused it”, “this goal is good”.
3
Predict the helper
Guess what fact would close it, before reading options.
4
Tag every option S, W or 0
Cross out every W and 0.
5
Pick the strongest S
If two survive, take the one that hits the gap directly.

What kinds of facts strengthen an argument?

🧩 At a glance

Five shapes of a strengthener

🚫Rival ruled out

“The mocks were as hard as before.” The usual causal winner.

⚙️Mechanism shown

“Residents sleep 90 minutes more.” Explains how the cause works.

🧪Control group

“Same coaching, no curfew, no rise.” Cause absent, effect absent.

📈Dose and pattern

“Those who logged off earliest improved most.”

⚖️Value confirmed

Show the assumed goal is worth having (2022 Q121's key: speedy sexual-assault prosecution “is desirable”).

Which traps catch students on strengthen questions?

The planted opposite. In 2023 Q109, three of four options weaken.
The cheerleader. “The curfew is the warden's best decision” agrees loudly and adds nothing.
Wrong claim. Supports another of the author's points, not the stem's.
Too strong. “The curfew is the only reason” is a bigger claim, not evidence.
Out of scope. On-topic but off the link: cost, popularity.

When the 'right' answer just repeats the passage

⚠️ CLAT is not the GMAT here

Strict logic says a restatement adds nothing. Yet in 2021 Q131 and 2025 Q105 the key restates the author's evidence, because the other options attack it or wander off. Eliminate W and 0 first; if a restatement survives, take it.

Worked examples: strengthen questions step by step

✍️ Worked example Warm-up ⏱ 40 sec

The calorie-label canteen

Since the canteen began printing calories beside each item, fried-snack sales have fallen by a quarter. The canteen head concludes that calorie labels make students choose healthier food. Which most strengthens this?
(A) Students like the new menu design.
(B) Prices and items were unchanged, and salad and fruit sales rose.
(C) Some students never read the menu.
(D) Calorie labels are compulsory in some countries.

1
Lock: strengthen “labels → healthier choices”.
2
Gap: no price change explains it, and students switched food.
3
Tag: A 0, B S, C slight W, D 0.
4
Pick: B rules out the price rival and shows the switch.

Answer: (B)

⚡ The exam-hall shortcut

Causal claim? Hunt for “nothing else changed”. 15 seconds.

✍️ Worked example CLAT level ⏱ 75 sec

The midnight reading rooms

Every board-exam season a municipal corporation keeps twelve reading rooms open until midnight. This year, their users scored nine marks above the city average. Poor results among low-income students are usually blamed on lack of effort. The author disagrees: most share one room with four relatives and a television that never goes off. Give them a quiet desk and the gap closes. Space, not effort, holds them back.

Which most strengthens the claim that space, rather than effort, explains the higher scores?
(A) Most users already scored above the city average before using the rooms.
(B) Among students with similar homes, schools and earlier marks, room users gained nine marks more than non-users.
(C) The rooms cost under ₹2 lakh a month to run.
(D) Many users said the rooms were their only quiet place to study.

1
Lock: sub-claim: space, not effort.
2
Gap: users weren't simply the harder-working students to begin with.
3
Predict: users and non-users who start out alike.
4
Tag: A W (toppers chose the rooms). B S. C 0 (cost, not cause). D weak S (keen students would say it too).
5
Pick: B: matched groups remove the effort rival.

Answer: (B)

⚡ The exam-hall shortcut

Two S options? Matched groups beat testimonials.

✍️ Worked example Tricky ⏱ 60 sec

The doubt-clearing app

A coaching centre says its new doubt-clearing app raised CLAT ranks: app users improved by 1,200 places on average over last year's batch. All of the following strengthen the claim EXCEPT:
(A) The app was the only change to the course.
(B) Students who used the app most improved most.
(C) This year's batch had far more second-time takers.
(D) The branch without the app showed no improvement.

1
Lock: EXCEPT. Three strengthen; find the misfit.
2
Gap: the app, not a different batch, explains it.
3
Tag: A S (rival ruled out), B S (dose), C W (repeaters usually rank higher), D S (control).
4
Pick: C, the only W.

Answer: (C)

⚡ The exam-hall shortcut

Write S, S, W, S in the margin; circle the misfit.

How has CLAT asked strengthen questions?

📝 Asked in CLAT 2023 · Q109 Strengthen a sub-claim

…The biggest challenge is to navigate unpredictable international economic shocks in the near future. The Indian economy's health is not exactly at its best. Exports may not be able to take advantage of a falling rupee since international demand is expected to stagnate. India's growth and employment situations are yet to stabilise…

Which of the following, if true, would most strengthen the author's arguments for why Indian exports may not be able to take advantage of a falling rupee?

AEconomies across the world are witnessing a slowdown, and in such economies, demand for imports decreases substantially.

BEconomies across the world are booming, and there is an increasing demand for Indian exports.

CA reduction in the volume of exports would be more than offset by the increased value of dollars that Indian exporters would earn.

DCountries across the world have managed to find ways to insulate themselves from the effects of the Russia-Ukraine war and will need a lot of Indian imports to sustain their new growth models.

Reveal answer + reasoning

Answer: A

Lock: one sentence: exports won't gain because world demand will stagnate. Gap: stagnant economies won't buy more even from a cheaper India. A confirms it. Answer A.

Why the others fail

B — Booming demand means exporters would gain. Opposite.
C — Extra dollar value outweighing lost volume means exporters gain. Subtle opposite.
D — Rising demand for Indian goods. Opposite.

📝 Asked in CLAT 2024 · Q92 Strengthen the main argument

…India is only at their receiving end, nowhere close to the US and China's advances… it is only with sufficient AI prowess that India shall really get to play at the high table of global rulemaking for AI… In this and at this stage, a proactive government role is key, rather than just waiting on some large corporation to do the needful. Missing this bus will after all be even more costly than missing the chip research one… Let us lead instead of only being led.

Which of the following, if true, would most strengthen the main argument of the passage?

AGovernments that lead the initiative on regulating and responding to the advancement of AI tools benefit the most from them.

BGovernments that don't engage with generative AI and remain at its receiving end stay risk-averse with nothing to lose.

CGovernments that actively incentivise MNCs to participate in AI governance make the most out of the advancements in the field.

DGovernments that explore models of public-private partnership strike the right balance in regulating generative AI.

Reveal answer + reasoning

Answer: A

Lock: the main argument: India needs its own AI strength, government-led, to shape global AI rules. Gap: leading pays off. A says exactly that. Answer A. Autopsy below.

🔬 Option autopsy

Autopsy: CLAT 2024 Q92

Tag each option of 2024 Q92.

A Governments that lead on AI benefit the most. Tag it

✅ Correct

Confirms the bridge: leading pays.

B Staying at the receiving end costs nothing. Tag it

🔄 Opposite direction

The author says missing this bus is costly.

C Incentivising MNCs to join AI governance pays most. Tag it

🌗 Half right

Hands the lead to corporations, which the author rejects.

D Public-private partnership balances AI regulation. Tag it

🛸 Out of scope

About the regulatory mix, not indigenous AI.

✅ Correct🔄 Opposite direction🌗 Half right🛸 Out of scope

Guess the trap behind each option, then tap to check. Wrong options fail in a handful of predictable ways.

📝 Asked in CLAT 2021 · Q131 When the answer restates evidence

…Instead of learning from India's experience, the first instinct is to doubt Indian data. We aren't counting the cases right, we aren't doing enough tests, we don't classify the deaths properly — the list of doubts goes on and on. This, even as the tests have only increased, positivity rate has dropped and almost all Indian hospitals are seeing a drop in COVID-19 admissions and fatalities… almost all evidence points to the fact India has flattened the corona curve, while the US, UK and most of Europe still haven't.

Which of the following strengthens the author's argument that India has tackled the COVID-19 pandemic better than most advanced nations?

AIndia's positivity rate of COVID-19 cases and admissions in Indian hospitals are reduced.

BIndia's counting of the number of COVID-19 cases is incorrect.

CIndia's testing facilities for COVID-19 cases are inadequate.

DIndia's classification of COVID-19 cases is inaccurate.

Reveal answer + reasoning

Answer: A

B, C and D are the very doubts the author rebuts; each makes India's figures untrustworthy, so all W. A repeats the author's evidence. Answer A: eliminate first, then accept the restatement.

Why the others fail

B — Wrong counting makes the low figures meaningless. Weakens.
C — Too few tests would hide cases. Weakens.
D — Misclassified deaths flatter India's figures. Weakens.

💥 Myth vs fact

Myth vs fact: strengthen questions

🙅 Myth

The right option must prove the conclusion.

Tap to bust it →

✅ Fact

Just more likely. A push on the gap beats a big claim elsewhere.

🙅 Myth

The loudest agreement wins.

Tap to bust it →

✅ Fact

“The twin hostel didn't improve” beats “the curfew is brilliant”.

🙅 Myth

A restatement of the passage is always wrong.

Tap to bust it →

✅ Fact

Not in CLAT. 2021 Q131 keyed one because the rest pointed the wrong way.

🙅 Myth

Attacking the other side's view strengthens yours.

Tap to bust it →

✅ Fact

Only if that view is a rival explanation for the same effect.

Quick quiz: can you spot the strengthener?

🎯 Quick quiz

Strengthen questions: 5-question check

0 / 5

Last year, Shantinagar Municipal School scrapped written homework for Class 8 and added a 30-minute reading period at the end of each day. By March, the share of Class 8 students reading at grade level rose from 41% to 63%. The headmistress argues that the reading period, not the homework ban, caused the improvement, and wants every municipal school to copy it.

Q1. Which most strengthens the headmistress's argument?

A football academy in Kolkata cut training from six days a week to four. Over the next season, injuries in the squad fell by half and the team won eleven more matches than in the season before. The coach concludes that the extra rest days improved results by keeping players fit, and says other academies should stop training every single day.

Q2. Which most strengthens the coach's conclusion?

Q3. Aarav: “My cousin switched to 5 am study and his mock percentile went from 80 to 95. Early mornings boost scores.” Which most strengthens this?

Q4. A city banned plastic bags; monsoon drain blockages then fell 40%. All of the following strengthen the credit given to the ban EXCEPT:

Q5. “Online lectures can't replace classrooms: students learn by arguing with classmates, and real argument needs people in one room.” Which most strengthens this?

Strengthen questions: the one-page revision

🎯 Strengthen questions in a nutshell

Strengthen = a fact, taken as true, that makes the conclusion more likely. A nudge is enough.
Work on the gap, never the premises.
Winners rule out a rival, show a mechanism, add a control, or confirm a value.
Tag S, W or 0; CLAT plants weakeners.
A restatement can win when it's the only S left.

📎 Cheat sheet

“most strengthen”, “supports” → Strengthen → name the gap
“the main argument” → Main claim → write it in one line first
“arguments for why X” → Sub-claim → find X's sentence and its reason
“In the context of the statement” → Quoted line → what does it assume is good?
“…EXCEPT” → Reverse filter → tag S/W/0, pick the misfit
“most weaken” → Weaken → attack the same gap

Frequently asked questions

How do you answer strengthen questions in CLAT?

Lock the claim the stem names, then map the argument: evidence, conclusion and the unstated gap between them. Predict what fact would close that gap, tag each option as strengthens, weakens or no effect, and pick the strongest option that works on the gap.

Does the correct option have to prove the conclusion?

No. It only has to make the conclusion more likely than it was before. CLAT asks for the option that most strengthens, so a modest push on the right spot beats a dramatic claim about something the argument never relied on.

What is the most common correct answer in strengthen questions?

On causal arguments, an option that rules out a rival explanation, such as a group without the cause showing no change. On opinion passages, CLAT often keys the option that confirms the author's evidence or the value behind the claim, once the other three point the wrong way.

How is a strengthen question different from an assumption question?

An assumption question asks what the argument must take for granted. A strengthen question asks which new fact makes the conclusion more likely. They share a target: the best strengthener often confirms the very assumption you would name, so finding the gap answers both.