Logical ReasoningDifficulty: Medium

PT3 S2 Q3 Explanation

In Europe, schoolchildren devote time

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsNecessary Assumption

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Stimulus

In Europe, schoolchildren devote time during each school day to calisthenics. North American schools rarely offer a daily calisthenics program. Tests prove that North American children are weaker, slower, and shorter-winded than European children. We must conclude that North American children can participate in school calisthenics on a daily basis.

What this question is testing

Necessary Assumption

Your task

Find the assumption the argument requires in order for its conclusion to hold.

Common trap

Answers that would help the argument but aren't strictly required (sufficient, not necessary).

Winning move

Negate each choice — the right one breaks the argument when negated.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
3.

Which one of the following is assumed in

Answer choices

  1. Reversal21% picked this

    All children can be made physically fit by

    We need to establish calisthenics as necessary. This answer tells us calisthenics is sufficient.

  2. Out of Scope: equally4% picked this

    All children can be made equally physically fit by

    Like A, this answer reverses the role of calisthenics in our conditional, presenting it as sufficient, not necessary. Furthermore, this answer introduces the idea of making children equally fit. We don't need to assume anything about equality in order to conclude calisthenics are necessary to physical fitness.

  3. Out of Scope: superior health1% picked this

    Superior physical fitness produces superior

    We're trying to establish that calisthenics are required for fitness. Even though, in real life, health and fitness are closely related, don't be fooled! On the LSAT, it's common for wrong answers to drift away from specific concepts like fitness or weight into general health. That sort of drift is not allowed in Necessary Assumption questions.

  4. Correct74% picked this

    School calisthenics are an indispensable factor in European children’s superior

    Why this is right

    This establishes that the school calisthenics is the causal difference maker. Confirm with the negation test: if school calisthenics are NOT an indispensable factor in the Eurpoean children's superior physical fitness, then why on earth would we be able to make American children fit only if we introduced daily calisthenics in school?

    Skill tested: Necessary Assumption · how this choice captures the argument's function is the move to repeat next time.

  5. Weakener1% picked this

    North American children can learn to eat a more nutritious diet as well as

    This answer raises alternative paths to fitness. A correct answer would rule them out.

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