an earthquake shaking the ground sediment washing into a bay a rainstorm weathering rock water flowing in stream
I gave my students this multiple choice question: Natural processes cause rapid and slow changes to Earth's surface. Which event causes changes to Earth's surface most rapidly?

Only one answer is correct among these 4 choices:
- an earthquake shaking the ground
- sediment washing into a bay
- a rainstorm weathering rock
- water flowing in stream

Could you tell me which one is correct?

an earthquake shaking the ground