Critical Reasoning (CR) | Re: A fourteen-year study of finches on the Galapagos islands

Look at option A

"During drought conditions, the weather promotes the growth of plants that produce small, hard seeds"

Let's negate it.

During drought conditions, the weather doesnot promote the growth of plants that produce small, hard seeds

Do we know the impact of small hard seeds on the conclusion that climatic variations cause a major difference in survival rates of small and large finches?
We don't.
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