May 2020 LSAT Section 3 Question 9

Robin: Archaeologists can study the artifacts left by ancient cultures to determine whether they were nomadic or sed...

AndrewArabie on November 10, 2022

I don't understand how they disagree over B

K never implies its unreasonable to assume the nature of a culture based on the materials used to make the artifacts, she just says there are more considerations when making that determination. So why is B the right answer?

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Emil-Kunkin on November 14, 2022

K tells us that there are more considerations, so we cannot rely solely on if the artifacts are made to last. Since K believes we cannot use them to be sure, she must believe that B is not a reasonable assumption.