groundwater is underground and surface water is above ground. americans get their drinking water from…

Brief Explanations:

An aquifer is an underground layer of water - bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt). A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river, which is surface water.

Answer:

A. Aquifer