You are presented with the quiz "What causes the amount of daylight to change?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "when the season changes , the amount of daylight will change" and "seasons occur due to the tilt of the Earth's axis and the orbit of the Earth around the Sun". 

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


 

  The tilt of Earth's axis         