solar radiation reflected from the Moon many volcanic eruptions near the Ring of Fire the greenhouse effect in the atmosphere plankton distribution in shallow ocean waters
I gave my students this multiple choice question: The temperatures in space vary from extremely cold to extremely hot. Earth's surface temperature is relatively stable. Which of these is most responsible for Earth's surface temperatures?

Only one answer is correct among these 4 choices:
- solar radiation reflected from the Moon
- many volcanic eruptions near the Ring of Fire
- the greenhouse effect in the atmosphere
- plankton distribution in shallow ocean waters

Could you tell me which one is correct?

the greenhouse effect in the atmosphere