The Earth rotates on its axis. The Sun rotates on its axis. The Earth's axis is tilted. The Earth revolves around the Sun.
I gave my students this multiple choice question: Which statement explains why daylight and darkness occur on Earth?

Only one answer is correct among these 4 choices:
- The Earth rotates on its axis.
- The Sun rotates on its axis.
- The Earth's axis is tilted.
- The Earth revolves around the Sun.

Could you tell me which one is correct?

The Earth rotates on its axis.