Logical ReasoningDifficulty: Easy

PT144 S4 Q15 Explanation

Armstrong: For the treatment of

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

TopicsFlaw

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Stimulus

Armstrong: For the treatment of a particular disease, Dr. Sullivan argues for using nutritional supplements rather than the pharmaceuticals that most doctors prescribe. But this is in his self-interest since he is paid to endorse a line use nutritional supplements in treating the disease.

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
15.

Armstrong's argument is flawed in that

Answer choices

  1. Trap0% picked this

    relies on two different meanings of the term "supplement" to draw

  2. Trap4% picked this

    relies solely on an appeal to an authority whose trustworthiness should not necessarily be

  3. Trap1% picked this

    appeals to people's emotions regarding the treatment of disease rather than to the efficacy of the

  4. Correct94% picked this

    criticizes Dr. Sullivan's motives for holding a position rather than addressing

    Why this is right

    Answer D is correct.

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

  5. Trap1% picked this

    fails to justify its presumption that nutritional supplements cannot be used in conjunction

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