the Sun to orbit around Earth. the Moon to orbit around Earth. Earth to orbit around the Sun. Earth to orbit around the Moon.
I gave my students this multiple choice question: It takes approximately 365 days for

Only one answer is correct among these 4 choices:
- the Sun to orbit around Earth.
- the Moon to orbit around Earth.
- Earth to orbit around the Sun.
- Earth to orbit around the Moon.

Could you tell me which one is correct?

Earth to orbit around the Sun.