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

Fact 2: Learning and memory are essential to an animal's ability to survive and thrive.

Given the two facts above, answer the question "Playing is one of many ways animal improve ability to what" with the following options: 
- Decibels
 - find habitat
 - mate
 - exercise
 - health
 - grow
 - survive
 - sound


 

       survive  