Logical ReasoningDifficulty: Easy

PT139 S1 Q16 Explanation

Roxanne promised Luke

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

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Stimulus

Roxanne promised Luke that she would finish their report while he was on vacation; however, the deadline for that report was postponed. Clearly, if you promised a friend that you would meet them for lunch but just before lunch you felt ill, it would not be wrong for you you to be there if you felt ill. Similarly, _______

What this question is testing

Most Supported

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
16.

Which one of the following most logically completes

Answer choices

  1. Out of Scope: wrong2% picked this

    if Roxanne believes that Luke would not expect her to finish the report under the circumstances, then it would be wrong

    We have no principle that would ever let us conclude that it was wrong to do something. The only principle we have to go off of allows us to conclude that it would be not wrong if Roxanne failed to finish the report as promised.

  2. Bad Match6% picked this

    it would not be wrong for Roxanne to finish the report if Luke did not expect the

    This answer is analogous to saying, "It would not be wrong for the sick person to still show up to lunch, if the other person didn't expect them to be sick." That's not wrong, but it's not conforming to the principle the way the correct answer is. Many of us would probably think that "if my friend doesn't realize I'm sick, then it would be right for me to try to just suck it up and meet them at lunch, even though I'm sick." But the principle we're building off of is more about excusing us for not showing up.

  3. Bad Match5% picked this

    if Luke would expect Roxanne to finish the report even after the deadline has been postponed, then it would be wrong for

    This answer is analogous to saying, "It the person waiting at lunch still expected the sick person to show up even after learning they were sick, then it would be wrong for the sick person not to show up." The principle we're building off of is more about excusing the sick person for not showing up.

  4. Correct84% picked this

    if Luke would not expect Roxanne to finish the report under the circumstances, then it would not be wrong for Roxanne

    Why this is right

    This lines up with how we anticipated they would complete the analogy: - it would not be wrong for Roxanne to fail to deliver on the promise [of having the report done by vacation's end]. - Luke wouldn't expect Roxanne to finish it by the promised deadline, if the deadline has now been pushed back. Here, they just combined that into a conditional: If the circumstances of a pushed-back deadline mean that Luke no longer expects Roxanne to finish by the end of his vacation, then it would not be wrong if Roxanne fails to finish. This answer, if we applied it to the subject matter of the principle, would sound like this: If your friend would not expect you to attend the promised lunch under the circumstances (of your being sick), then it would not be wrong for you to miss the lunch.

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

  5. Out of Scope: wrong3% picked this

    Luke would not expect Roxanne to finish the report and it would be wrong if

    We have no principle that would ever let us conclude that it was wrong to do something. The only principle we have to go off of allows us to conclude that it would be not wrong if Roxanne failed to finish the report as promised. This answer, as applied to the original principle, would sound like, "Your friend would not expect you to attend the lunch, and it would be wrong if you did attend lunch."

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