You are presented with the question "What determines the amount of daylight earth gets? " and the following answer choices: 
- Heat energy
 - The darkness it gets
 - The bending of a ray of light
 - The tilt of the axis
 - The tilt of the sun's axis
 - electromagnetic energy
 - The brightness of the earth
 - rain or sun shine

Now knowing that when the seasons change from the summer to the fall , the amount of daylight will decrease and seasons are caused by the tilt of the earth's axis, choose the best answer.


 

    The tilt of the axis     