Fact 1: Playing is just one of many ways that mammals and other animals learn how to behave.

Fact 2: Whales are aquatic mammals.

Given the two facts above, answer the question "what learns how to behave through playing?" with the following options: 
- protist
 - people
 - humans
 - ants
 - sharks
 - plants
 - whales
 - athletes


 

       whales  