The Sun orbits around the Earth. Earth orbits around the Sun. Earth turns on its axis. The Sun turns on its axis.
I gave my students this multiple choice question: What is the correct explanation for why we have day and night on Earth?

Only one answer is correct among these 4 choices:
- The Sun orbits around the Earth.
- Earth orbits around the Sun.
- Earth turns on its axis.
- The Sun turns on its axis.

Could you tell me which one is correct?

Earth turns on its axis.