completing its life cycle beginning hibernation responding to its environment preparing for migration
I gave my students this multiple choice question: In the spring and early summer, bears often scratch their backs against trees to remove winter fur. This is an example of an animal

Only one answer is correct among these 4 choices:
- completing its life cycle
- beginning hibernation
- responding to its environment
- preparing for migration

Could you tell me which one is correct?

responding to its environment