Logical ReasoningDifficulty: Easy

PT157 S3 Q10 ExplanationJournalist: Contrary to popular opinion

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

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Stimulus

Journalist: Contrary to popular opinion, it is more dangerous for an individual to drive during the day than during the night. A recent study found that in each of the last ten years, the number of traffic during the day than during the night.

What this question is testing

Strengthen

Conclusion

Daytime driving is more dangerous. Hold the headlights.

Evidence

More fatal accidents happen during the day. That is the entire basis.

Evaluate

More daytime accidents could just mean more daytime drivers. The argument needs reasons why driving during the day is inherently more dangerous per person, not just busier.

Goal

Four answers strengthen. One does not. Find the odd one out.

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.

Each of the following, if true, helps to strengthen the

Answer choices, explained

  1. Strengthens (Opposite)1% picked this

    Only during the day are there more unsafe than safe vehicles

    More unsafe vehicles on the road only during the day creates a daytime-specific hazard, making daytime driving more dangerous for every individual. This strengthens the argument.

  2. Strengthens (Opposite)4% picked this

    There is decreased law enforcement presence during

    Fewer police during the day means more dangerous driving behavior during daylight hours. With less enforcement, risky driving goes unchecked, increasing per-driver danger. This strengthens the argument.

  3. Strengthens (Opposite)4% picked this

    Persons drive more cautiously during the night than during

    More cautious nighttime driving reduces per-driver risk at night relative to during the day. This differential in driving behavior strengthens the claim that daytime driving is more dangerous.

  4. Correct90% picked this

    The number of travelers per vehicle has increased over the past

    Why this is right

    This does not strengthen the argument. More travelers per vehicle is a general trend with no stated difference between day and night. More passengers could increase fatalities per accident, but if this applies equally to both time periods, it does not make daytime driving comparatively more dangerous. Without a day-specific component, this answer has no differential impact on the argument's conclusion.

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

  5. Strengthens (Opposite)1% picked this

    Persons drive faster during the day than during

    Faster daytime driving means more severe crashes during the day. Higher speeds increase stopping distances, impact forces, and reduce reaction time. This is a clear daytime-specific risk factor that strengthens the argument.

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