Answer: Option (d) is the correct answer.
Step-by-step explanation:
Ground water is the water that is present below the ground table. When we use excessive amount of fertilizers then these fertilizers get absorbed by the ground through the pores present in it.
As a result, this fertilizer enters into the ground water resulting in polluting the water.
Therefore, we can conclude that one way that people pollute groundwater is by using excessive amounts of fertilizers on their lawns.