Earth making a complete rotation the Moon making a complete rotation Earth revolving completely around the Sun the Moon revolving completely around Earth
I gave my students this multiple choice question: Which event takes about one year to complete?

Only one answer is correct among these 4 choices:
- Earth making a complete rotation
- the Moon making a complete rotation
- Earth revolving completely around the Sun
- the Moon revolving completely around Earth

Could you tell me which one is correct?

Earth revolving completely around the Sun