GMAT Critical Reasoning (CR) | Re: Cognitive psychologist: The argument against IQ as a hereditary trait

Hi Mike, thanks for your explanation.

While I arrived at option A using the same reasoning, I have reason to think this is not really an assumption, only seems like one. The conclusion in question is "The fact that there is correlation with eye skills -they need not be fixed - implies IQ is hereditary". Now a true assumption when negated (or seen as a bridge) should break (lead to) this conclusion.

Option A, however, is the assumption only for the claim that "eye skills are not
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