Answer:
4) fail to hibernate
Explanation:
Animals, such as bear, tend to hibernate when the conditions of the environment become harsh for them. As a result, the go to hibernation mode for that period of time. Bears usually hibernate during the winter season when the temperature outside becomes lower.
When a bear will be placed in the laboratory with constant sunlight, the bear will fail to hibernate as the bear will have no burrow or cave for hibernation and also he might consider the light source as conditions being warm.