Fact 1: Aplanet rotating causes cycles of day and night on that planet.

Fact 2: Of all the planets, Mars is most like Earth.

Given the two facts above, answer the question "what rotates causing cycles of day and night?" with the following options: 
- bushes
 - Mars
 - wind
 - Winter
 - corn
 - Sun
 - motors
 - rings


 

  Mars       