You are presented with the quiz "What do many plants do to respond to the shorter days in fall?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "many plants respond to the days growing shorter in the fall by going dormant" and "plants can be divided at any time, although the dormant or rest period is best". 

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


 

 go through a resting period          