Hibernation is an adaptation that animals to
a. survive high elevations
b. survive cold winters
c. survive droughts
d. evade predators

Correct 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

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.