You are presented with the quiz "Ozone depletion results in radiation levels that are highest when?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "ozone depletion results in higher levels of UV radiation reaching Earth" and "solar UV radiation levels are highest during the middle of the day". 

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


 

 middle of the day          