Question

aquifers are deep ______ rivers or caves that filter and store fresh water.
(1 point)

○ forested
○ mountainside
○ molded
○ underground

Explanation:

Aquifers are defined as underground layers of permeable rock or sediment that hold and transmit groundwater. The term "deep" in the sentence aligns with their underground location, while other options (forested, mountainside, molded) do not describe the core characteristic of aquifers.

Answer:

underground