You are presented with the question "What learns to behave through playing?" and the following answer choices: 
- otters
 - bacteria
 - viruses
 - rocks
 - lions
 - animals
 - humans
 - Birds

Now knowing that playing is just one of many ways that mammals and other animals learn how to behave and mammals include lions, bears, dogs, horses, cattle and antelopes, choose the best answer.


 

     lions    