Logical ReasoningDifficulty: Easy

PT103 S3 Q2 Explanation

From the tenth century

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

TopicsMethod

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Stimulus

From the tenth century until around the year 1500, there were Norse settlers living in Greenland. During that time, average yearly temperatures fell slightly worldwide, and some people claim that this temperature drop wiped out the Norse settlements by rendering Greenland too cold for human habitation. But this explanation cannot be correct, time the Norse settlers were there, continued to thrive long after 1500.

What this question is testing

Method

Conclusion

The author rejects the popular explanation that cooling temperatures wiped out the Norse settlements in Greenland.

Evidence

Why? Because another group — the Inuit — was living in the same place at the same time and they did just fine, even after 1500.

Evaluate

The opposing claim was: Greenland got too cold for humans. The author's response: well, then how do you explain the Inuit thriving there? If a place is too cold for humans, no humans should be living there. Inuit humans did. That fact is in direct tension with the temperature explanation.

Think of it like this: someone says "the restaurant closed because the food was inedible," and you respond You've produced a fact that conflicts with the proposed explanation.

Goal

The right answer should describe this technique — offering evidence that contradicts the opposing position.

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The question
2.

Which one of the following is a technique of reasoning used in

Answer choices

  1. Bad Description1% picked this

    denying the relevance of an

    The author does not invoke or deny an analogy. The Inuit and Norse are presented as two real groups living in the same actual place at the same actual time — that is a direct counterexample, not an analogy. There is no analogy whose relevance is being denied.

  2. Correct87% picked this

    producing evidence that is inconsistent with the claim

    Why this is right

    This is the move exactly. The opposed claim is that Greenland became too cold for human habitation. The author produces a fact that is inconsistent with that claim — the Inuit, also humans, lived in Greenland at the same time and continued to thrive. If Greenland had become uninhabitable, the Inuit should not have thrived. The Inuit's survival is the inconsistent evidence.

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

  3. Bad Description11% picked this

    presenting an alternative explanation that purports to account for more of

    The author does not present an alternative explanation for what happened to the Norse. She simply argues the temperature explanation cannot be right. No replacement theory — about disease, conflict, economic decline, or anything else — is offered. The argument's aim is purely negative: knock down the existing explanation.

  4. Bad Description1% picked this

    citing a general rule that undermines the claim

    The author does not cite any general rule. She offers a specific historical fact — the Inuit thrived in Greenland during the same period. That is a particular counterexample, not a generalization about how cold weather, human survival, or any other category works.

  5. Bad Description0% picked this

    redefining a term in a way that is favorable to the

    The author does not redefine any term. Words like "temperature drop," "Norse," "Greenland," and "thrive" carry their ordinary meanings throughout. The argument relies on factual evidence about the Inuit, not on shifting definitions.

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