seasonal heating and cooling of Earth's surface weathering of rock at Earth's surface Earth's gravitational attraction to the Moon faulting of rock in Earth's crust
I gave my students this multiple choice question: Most of Earth's major earthquakes are caused by

Only one answer is correct among these 4 choices:
- seasonal heating and cooling of Earth's surface
- weathering of rock at Earth's surface
- Earth's gravitational attraction to the Moon
- faulting of rock in Earth's crust

Could you tell me which one is correct?

faulting of rock in Earth's crust