from a sudden increase in solar radiation striking Earth from the Moon's gravitational pull during a close orbit from rocks under stress shifting deep inside Earth from the weight of sediments pushing down on bedrock
I gave my students this multiple choice question: Where does the energy from an earthquake originate?

Only one answer is correct among these 4 choices:
- from a sudden increase in solar radiation striking Earth
- from the Moon's gravitational pull during a close orbit
- from rocks under stress shifting deep inside Earth
- from the weight of sediments pushing down on bedrock

Could you tell me which one is correct?

from rocks under stress shifting deep inside Earth