a learned behavior. an instinctive behavior. a response to crowding. an escape from predators.
I gave my students this multiple choice question: Every year, green sea turtles migrate approximately 2000 km to reproduce. This migration is an example of

Only one answer is correct among these 4 choices:
- a learned behavior.
- an instinctive behavior.
- a response to crowding.
- an escape from predators.

Could you tell me which one is correct?

an instinctive behavior.