You are presented with the quiz "What uses playing as just one of many ways to learn how to behave?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "playing is just one of many ways that mammals and other animals learn how to behave" and "after all, seals are mammals just as humans are mammals". 

So, what's the best answer to the question?


 

    Humans       