behavioral trait. a learned trait. an inherited trait. an instinctive trait.
I gave my students this multiple choice question: Most species of ducks have webbed feet. The webbed feet are an example of

Only one answer is correct among these 4 choices:
- behavioral trait.
- a learned trait.
- an inherited trait.
- an instinctive trait.

Could you tell me which one is correct?

an inherited trait.