Question

How does surface water become groundwater?

A. Irrigation adds water to the soil, which is taken up by plants and released to the air.

B. Precipitation flows downhill and enters large bodies of water above layers of solid rock.

C. Precipitation collects, infiltrates into the ground, and collects above layers of solid rock.

D. Snow falls in the mountains and collects as snowcaps in the winter.​

Answer 1

Groundwater begins as rain or snow that falls to the ground. This is called precipitation. Only a small portion of this precipitation will become groundwater. Most will run off the land surface to become part of a stream, lake or other body of water.

So to conclude that the answer is C