Logical ReasoningDifficulty: Easy

PT108 S3 Q10 Explanation

Many people joke about Friday

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

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Stimulus

Many people joke about Friday the thirteenth being an unlucky day, but a study showed that in one year approximately 17 percent of people scheduled to fly canceled or did not show up for their flights on Friday the thirteenth—a rate higher than that on any other day and date in that disrupt their travel plans than risk flying on a supposedly unlucky day.

What this question is testing

Weaken

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

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

The question
10.

Which one of the following statements, if true, most seriously weakens

Answer choices

  1. Trap1% picked this

    People who fly tend to be professionals who as a group are less superstitious than

  2. Trap7% picked this

    Surveys show that less than 5 percent of the population report that they believe that Friday the thirteenth

  3. Correct89% picked this

    Weather conditions at several major airports were severe on the Fridays that fell on the thirteenth in the

    Why this is right

    Answer C is correct.

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

  4. Trap3% picked this

    In the year of the study, automobile traffic was no lighter on Friday the thirteenth

  5. Trap1% picked this

    The absentee rate among airline workers was not significantly higher than normal on the Fridays that fell on the thirteenth in

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