reflected sunlight absorbed light from Earth's atmosphere gases in the Moon's interior volcanic eruptions on the Moon's surface
I gave my students this multiple choice question: The Moon is visible to observers on Earth because of

Only one answer is correct among these 4 choices:
- reflected sunlight
- absorbed light from Earth's atmosphere
- gases in the Moon's interior
- volcanic eruptions on the Moon's surface

Could you tell me which one is correct?

reflected sunlight