energy transfers global warming tidal variations ocean currents
I gave my students this multiple choice question: A recent article in a science journal explains the relationship between convection currents and plate tectonics. As fluid within the mantle circulates, it causes crustal plates to move. Which is most likely causing the liquids inside Earth to circulate?

Only one answer is correct among these 4 choices:
- energy transfers
- global warming
- tidal variations
- ocean currents

Could you tell me which one is correct?

energy transfers