Question

state of animal dormancy, similar to hibernation, characterized by inactivity and a lowered metabolic rate in response to high temps
hibernation
estivation
circadian rhythm
migration

Explanation:

The question is about a state of animal dormancy similar to hibernation but in response to high temperatures. Hibernation is for cold temperatures, Circadian Rhythm is about daily cycles, and Migration is movement. Estivation is the term for dormancy in response to high temperatures and reduced water availability.

Answer:

B. Estivation