Which is a nonpoint source of pollution?

a) tourists throw trash into the ocean.
b) a car mechanic pours oil on the ground.
c) rain contains chemicals that seep into the ground.
d) a pipe dumps waste from a factory into a stream.

C) Rain contains chemicals that seep into the ground.

C) Rain contains chemicals that seep into the ground.

Explanation:

A non point source pollutant is the one which does not originate from a single source hence cannot be traced back to it's origin.

Rain contains chemicals that seep into the ground. The rain is a medium through which the surface runoff of materials like chemicals can take place. These pollutants cannot be traced back to their origin.

the answer would be 3