Please choose the correct answer to the question: Which example describes a behavioral adaptation?

Answer1: A bird builds its nest in the ash near a volcano. Answer2: A whale has the ability to hold its breath for 20 minutes. Answer3: A fox's hair is white in the winter and brown in the summer. Answer4: A monkey has long arms that allow it to swing from one branch to another.

Answer format: answer1/answer2/answer3/answer4