What are hibernation and aestivation?

Concept: Aestivation is summer rest and amid aestivation, creatures, as a rule tend to rest in a shady and cool place. They take rest amid the hot hours of the daytime. 

Hibernation may be a winter rest, and, in this rest, a life form tends to pass the time in tropic conditions. They are not dynamic at all. They discover a warm place for themselves to ensure their body is protected from cold environment.

Hence, the correct answer is option A.