GMAT Critical Reasoning (CR) | Re: Although fullerenes - spherical molecules made entirely of

D is correct because it dictates that natural fullrenes are different from those produced in the lab. Thus, conditions of the earth hypotheses can’t be evaluated.

Passage analysis:
Fact: fullerenes dicovered in laboratory, but still found in nature (mineral shungite).
Fact: processing fullrene in a lab requires special conditions.
Conclusion: natural fullrenes may help geologists validate an hypotheses about earth’s crust, because they would validate if the conditions of the earth when fullrenes
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