mass of Earth. magnetic field of Earth. rotation of Earth on its axis. weight of Earth's atmosphere.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The pull of gravity on Earth is a direct result of the
Possibilities:
- mass of Earth.
- magnetic field of Earth.
- rotation of Earth on its axis.
- weight of Earth's atmosphere.

mass of Earth.