Fact 1: Playing is one way mammals and other animals learn how to behave.

Fact 2: Second stage, learn how to behave assertively.

Given the two facts above, answer the question "How do animals learn how to be assertive?" with the following options: 
- lectures from their parent
 - instinct
 - Movement
 - playing
 - being killed
 - ligt
 - sweating
 - exercise


 

    playing     