Logical ReasoningDifficulty: Easy

PT126 S1 Q5 Explanation

Many scientists believe that bipedal

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

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Stimulus

Many scientists believe that bipedal locomotion (walking on two feet) evolved in early hominids in response to the move from life in dense forests to life in open grasslands. Bipedalism would have allowed early hominids to see over tall grasses, helping them to locate food and to detect and avoid predators. However, threat displays of many large apes, because it bettered an individual's odds of finding a mate.

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
5.

Which one of the following statements is most supported by the

Answer choices

  1. Unsupported Comparison2% picked this

    For early hominids, forest environments were generally more hospitable than

    Which of the two environments was more hospitable for early humans is unsupported.

  2. Correct86% picked this

    Bipedal locomotion would have helped early hominids

    Why this is right

    This is true for hominids in open grassland environments and hominids who never left the forest.

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

  3. Contradicted1% picked this

    Bipedal locomotion actually would not be advantageous to hominids living in

    Bipedal locomotion would have been advantageous to hominids living in open grassland environments by helping them see over tall grasses.

  4. Too Strong8% picked this

    Bipedal locomotion probably evolved among early hominids who exclusively inhabited

    The origin of bipedalism is still being debated today. It’s origin is still unknown.

  5. Unsupported Comparison2% picked this

    For early hominids, gathering food was more relevant to survival than was detecting

    Which of these two abilities was more relevant to survival is not discussed in the statements.

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