migration. an instinct. hibernation. a learned behavior.
I gave my students this multiple choice question: A newborn kangaroo has the ability to crawl into its mother's pouch to drink milk. This is an example of

Only one answer is correct among these 4 choices:
- migration.
- an instinct.
- hibernation.
- a learned behavior.

Could you tell me which one is correct?

an instinct.