The Moon has a thinner atmosphere than Earth. The Moon is too large to move away from Earth. The Moon is attracted by the gravity of Earth. The Moon has a smaller gravitational force than Earth.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which is the best explanation of why the Moon revolves around Earth?
Possibilities:
- The Moon has a thinner atmosphere than Earth.
- The Moon is too large to move away from Earth.
- The Moon is attracted by the gravity of Earth.
- The Moon has a smaller gravitational force than Earth.

The Moon is attracted by the gravity of Earth.