You are presented with the question "Playing is one of many ways animal improve ability to what" and the following answer choices: 
- Decibels
 - find habitat
 - mate
 - exercise
 - health
 - grow
 - survive
 - sound

Now knowing that playing is just one of many ways that mammals and other animals learn how to behave and learning and memory are essential to an animal's ability to survive and thrive, choose the best answer.


 

       survive  