LSAT Kung Fu Forum / Page 159, question 7

Page 159, question 7

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debc
debc's picture
Page 159, question 7

Could you please go over answer choice A? I understand why all of the other answer choices are wrong, but am having a hard time understanding why A is correct. Is it because A is saying that humans and rats are similar with regard to consuming a higher number of calories, thereby making the study relevant and weakening the conclusion? Wouldn't we also have to assume something about higher calories decreasing or affecting lifespan in humans in some way for this answer to work?

majorgeneraldave
majorgeneraldave's picture

The argument tells us that the diet worked for the rats because they were fat, and concludes therefore that it won't work for humans. But that assumes that the humans aren't fat. If you tell me that they are fat, then there's a fair chance that the diet will work for humans, and the conclusion is thereby weakened.

Clear?

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