Choose your answer from:
(A). bleeding.
(B). lying.
(C). hormones.
(D). food and shelter.
(E). hibernation.
(F). four limbs.
(G). proteins.
(H). crying.

You are presented with the quiz "What is used as an important survival trait by some animals?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "hibernation is used for conserving energy by some animals" and "energy conservation is an important survival trait". So, what's the best answer to the question?
Answer:
(E).