The Moon is more similar in composition to Earth than the Sun. The Moon has a smaller mass than Earth and the Sun. The Moon has a higher density than the Sun. The Moon is closer to Earth than the Sun.
I gave my students this multiple choice question: The influence of the Moon on the tides on Earth is greater than that of the Sun. Which best explains this?

Only one answer is correct among these 4 choices:
- The Moon is more similar in composition to Earth than the Sun.
- The Moon has a smaller mass than Earth and the Sun.
- The Moon has a higher density than the Sun.
- The Moon is closer to Earth than the Sun.

Could you tell me which one is correct?

The Moon is closer to Earth than the Sun.