runoff. filtration. groundwater. condensation.
I gave my students this multiple choice question: When soil becomes saturated during rainfall, excess water begins to collect on the surface. Downslope movement of this excess water to rivers, lakes, and streams is called

Only one answer is correct among these 4 choices:
- runoff.
- filtration.
- groundwater.
- condensation.

Could you tell me which one is correct?

runoff.