the ability to migrate the ability to camouflage the ability to produce body scents the ability to produce body wastes
I gave my students this multiple choice question: Animals of the same species may have difficulty recognizing each other. Which adaptation most likely developed to help animals recognize each other?

Only one answer is correct among these 4 choices:
- the ability to migrate
- the ability to camouflage
- the ability to produce body scents
- the ability to produce body wastes

Could you tell me which one is correct?

the ability to produce body scents