GMAT Reading Comprehension (RC) | Re: According to a theory advanced by researcher Paul Martin

1) Martin just said the extinction was caused by early humans . He doesn’t give any information about what the humans did with the animals. For all we know there could have been a hunting competition or something. So the food piece is n’t supported in the passage. As for B, I agree it can be a bit confusing but arrived at it simply by eliminating other choices."Krech also contradicts Martin’s exclusion of climatic change as an explanation by asserting that widespread climatic change
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