evaporation and infiltration evaporation and transpiration precipitation and infiltration precipitation and transpiration
I gave my students this multiple choice question: Some sinkholes and caves are created when water dissolves certain rocks and minerals below ground. Which two parts of the water cycle are most directly responsible for the formation of sinkholes and caves?

Only one answer is correct among these 4 choices:
- evaporation and infiltration
- evaporation and transpiration
- precipitation and infiltration
- precipitation and transpiration

Could you tell me which one is correct?

precipitation and infiltration