Question

The best place to store a pollutant (with regards to preventing groundwater contamination) is above:

A. a permeable layer of sand and gravel.
B. an impermeable layer of shale or clay.
C. an inclined, permeable aquifer.
D. a fractured rock body.

Answer 1

The best place to store a pollutant to prevent groundwater contamination is above an impermeable layer of shale or clay.

Correct answer is B

Step-by-step explanation:

The best place to store a pollutant (with regards to preventing groundwater contamination) is above an impermeable layer of shale or clay.

Rocks that are impermeable, such as shale or clay, act as confining layers and prevent the flow of water.

These rocks do not allow pollutants to seep through and contaminate the groundwater below. On the other hand, permeable layers like sand and gravel allow water to flow through, which can potentially spread pollutants and contaminate the groundwater.

Correct answer is B