the movement of the Sun. the rotation of Earth. the movement of the Moon. the tilt of Earth.
I gave my students this multiple choice question: The change from day to night on Earth can be explained by

Only one answer is correct among these 4 choices:
- the movement of the Sun.
- the rotation of Earth.
- the movement of the Moon.
- the tilt of Earth.

Could you tell me which one is correct?

the rotation of Earth.