Logical ReasoningDifficulty: Easy

PT120 S4 Q9 Explanation

Writer: I collaborated with another

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

TopicsPrinciple-Strengthen

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Stimulus

Writer: I collaborated with another writer on my last book, instead of writing alone as I usually do. Because the book sold so well as a result of this joint effort, I should collaborate with so that book will sell well too.

What this question is testing

Principle-Strengthen

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence 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
9.

Which one of the following principles, if valid, most helps to justify

Answer choices

  1. Trap5% picked this

    If a person’s book sells well because of a collaboration, that person’s next book will sell well, if he or she

  2. Trap7% picked this

    A book sells well only if its author collaborated on the book

  3. Correct84% picked this

    If a person’s book sells well because of a collaboration, future collaborations on the part of that person will produce

    Why this is right

    Answer C is correct.

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

  4. Trap2% picked this

    Writers who do not collaborate on books have a smaller chance of writing a book

  5. Trap2% picked this

    Writers who collaborate on books, if they are good writers, usually produce books

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