Earth rotates on its axis. Earth revolves around the Sun. The Sun rotates on its axis. The Sun revolves around the galaxy.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What explains how day and night occur in different parts of Earth?
Possibilities:
- Earth rotates on its axis.
- Earth revolves around the Sun.
- The Sun rotates on its axis.
- The Sun revolves around the galaxy.

Earth rotates on its axis.