Question

water that exists in the zone of saturation is known as _____.
contamination
runoff
groundwater
stormwater

Explanation:

The zone of saturation is where all the pore - spaces in soil and rock are filled with water. This water is called groundwater. Contamination refers to pollutants in water, runoff is water flowing over the surface, and stormwater is runoff from precipitation events.

Answer:

C. groundwater