You are presented with the question "How do mammals learn to behave?" and the following answer choices: 
- reusing things
 - Riding a bike
 - adding heat
 - sound
 - Movement
 - exercise
 - Having fun
 - sweating

Now knowing that playing is just one of many ways that mammals and other animals learn how to behave and playing is really fun, choose the best answer.


 

       Having fun  