You are presented with the question "What causes differing light to reflect off of the moon?" and the following answer choices: 
- depress neuronal excitability
 - energy of moving objects
 - The revolution around earth
 - our nearest star
 - a hemisphere is tilted away from the sun
 - focusing a lens
 - flow of electrons
 - that material's properties

Now knowing that the moon revolving around the Earth causes the phases of the moon and phases of the Moon are caused by differing amounts of light reflected from the Earth, choose the best answer.


 

   The revolution around earth      