You are presented with the question "What causes the amount of daylight to change?" and the following answer choices: 
- The bending of a ray of light
 - The tilt of Earth's axis
 - movement of tectonic plates
 - The tilt of the sun's axis
 - The brightness of the sun
 - Time change
 - Electrical energy
 - global warming

Now knowing 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, choose the best answer.


 

  The tilt of Earth's axis       