Aquifers are a. located below the water table b. important sources of freshwater c. located in the saturated zone d. all of the above

The correct answer is option D

An aquifer can be defined as underground layer of water-containing permeable rock. Groundwater can be extracted using the wells.

It is located in the saturated zone which is located just below the water table. As it is an underground source of water,the water is freshwater.

The water which is below the water table is taken out by the help of the aquifers.

atp is used for energy.