eat less hibernate grow a thicker coat of fur increase its body temperature
I gave my students this multiple choice question: If the weather patterns change and stay colder, what is one way a mammal most likely will adapt to this change?

Only one answer is correct among these 4 choices:
- eat less
- hibernate
- grow a thicker coat of fur
- increase its body temperature

Could you tell me which one is correct?

grow a thicker coat of fur