Fact 1: When the season changes , the amount of daylight will change.

Fact 2: Seasonal changes such as winter to summer or fall to winter are best.

Given the two facts above, answer the question "what changes the amount of daylight?" with the following options: 
- converting electricity to heat
 - the sun increasing
 - fall moving to winter
 - The bending of a ray of light
 - summer sausage
 - global warming
 - Electrical energy
 - birds hibernating


 

   fall moving to winter      