Which effect occurs when a ground squirrel in early hibernation experiences sudden environmental warming involving vasodilation?

💡 Explanation

When ambient temperature rises, vasodilation increases peripheral blood flow from increased cardiac activity because of the reduced temperature gradient, potentially causing a premature arousal, and requires a significant energy cost. This arousal increases predation risk, rather than allowing torpor, altering temperature set-points, or reducing metabolism, which are associated with continued hibernation.

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