Correct answer: B). Survive cold winters
Hibernation is the state of inactivity in which body reduced its metabolic activity and lowers its body temperature. It is a form of adaptation is certain animals which help them to survive in extreme cold conditions.
Hibernation help animals in conservation of energy by slowing the metabolic activity and reducing body temperature for for several weeks and even for several months. Animals hibernate in order to survive when there is scarcity of food in the environment.
Example: Bears, bats and skunks
