Earth to rotate once on its axis the Moon to revolve once around Earth the Sun to revolve once around Earth Earth to revolve once around the Sun
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: An Earth year is the length of time it takes for
Possibilities:
- Earth to rotate once on its axis
- the Moon to revolve once around Earth
- the Sun to revolve once around Earth
- Earth to revolve once around the Sun

Earth to revolve once around the Sun