Logical ReasoningDifficulty: Hard

PT124 S1 Q22 Explanation

Doctor: Being overweight has long

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

TopicsFlaw

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Stimulus

Doctor: Being overweight has long been linked with a variety of health problems, such as high blood pressure and heart disease. But recent research conclusively shows that people who are slightly overweight are healthier than those be healthy, it suffices to be slightly overweight.

What this question is testing

Flaw

Your task

Describe the reasoning error the argument actually commits.

Common trap

Answers that name a real logical flaw the argument doesn't actually make.

Winning move

Articulate the gap in the reasoning yourself, then match it to the choice that describes that gap.

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

The question
22.

The argument's reasoning is flawed because

Answer choices

  1. Contradiction3% picked this

    ignores medical opinions that tend to lead to a conclusion contrary to

    No medical opinions contrary to the one drawn are presented in the argument.

  2. Wrong Flaw6% picked this

    never adequately defines what is meant

    There is no equivocation with respect to the term “healthy.” It is used without implication of different meanings of the term.

  3. Contradiction6% picked this

    does not take into account the fact that appropriate weight varies greatly from

    Stating that someone is overweight compares their weight with what it should be. There is not comparison between their weight and the appropriate weight for someone else. The comparison between people occurs after it is determined whether someone is overweight, underweight, or has an appropriate weight.

  4. Wrong Flaw20% picked this

    holds that if a person lacks a property that would suffice to make the person unhealthy, then that

    This describes negated logic. But the argument is not based on conditional logic, but rather comparative reasoning.

  5. Correct65% picked this

    mistakes a merely relative property for one that

    Why this is right

    This correctly describes the difference between someone who is healthier than someone else and someone who is actually healthy.

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

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