Question

which statement best describes a spring?
○ the top of the saturated zone
○ an underground layer of rock or sediment that holds groundwater
○ groundwater flowing naturally to the surface where it is lower than the water table
○ a vent in earths surface that periodically ejects a column of hot water and steam

Explanation:

• The top of the saturated zone is the water table, not a spring.
• An underground layer holding groundwater is an aquifer, not a spring.
• A vent ejecting hot water/steam is a geyser, not a spring.
• A spring forms when groundwater flows naturally to the surface where the surface elevation is below the water table.

Answer:

groundwater flowing naturally to the surface where it is lower than the water table