Answer:
E. Pollutants mixed with water pass through permeable layers above the aquifer.
Explanation:
An Aquifer is an underground body of rock that holds groundwater.
Groundwater is considered safe to an extent but it is also susceptible to contamination just like surface water.
Pollutants like man made products can pass through the permeable layers above the aquifer and cause it to become contaminated.
For example, pesticides, fertilizers, gasoline, oil and the likes can find their way into the soil, go through the aquifer and contaminate ground water.
