You are presented with the quiz "During what time frame do deciduous trees' leaves change color?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "the color of leaves on deciduous trees usually changes in the autumn season" and "autumn is a season of transistion as the warm summer days fade giving way to cooler weather". 

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


 

 summer end          