the slight tilt of the Moon the force of gravity from the Moon the convection within Earth's mantle the revolution of Earth around the Sun
I gave my students this multiple choice question: Which of the following is a cause of the ocean levels periodically rising and then falling?

Only one answer is correct among these 4 choices:
- the slight tilt of the Moon
- the force of gravity from the Moon
- the convection within Earth's mantle
- the revolution of Earth around the Sun

Could you tell me which one is correct?

the force of gravity from the Moon