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

Fact 2: Service animals are trained to behave properly in public settings.

Given the two facts above, answer the question "What is one way mammals are trained to behave properly in public settings?" with the following options: 
- walking
 - hunting
 - distracting
 - sweating
 - playing
 - stamina
 - fighting
 - Movement


 

     playing    