Fact 1: The moon revolving around the Earth causes the phases of the moon.

Fact 2: Phases of the Moon are caused by a shadow from the Earth.

Given the two facts above, answer the question "What does the light on the moon come from?" with the following options: 
- The Earth
 - a prism
 - The sun.
 - A shadow
 - heat
 - heat energy
 - Solar energy
 - The moon


 

   The sun.      