Earth's gravitational attraction to the Sun the Moon's revolution around Earth the distance of Earth from the Sun the tilt of Earth's axis as it revolves around the Sun
I gave my students this multiple choice question: Which of the following is most important in producing the seasons on Earth?

Only one answer is correct among these 4 choices:
- Earth's gravitational attraction to the Sun
- the Moon's revolution around Earth
- the distance of Earth from the Sun
- the tilt of Earth's axis as it revolves around the Sun

Could you tell me which one is correct?

the tilt of Earth's axis as it revolves around the Sun