• Point-source pollution: any identifiable source of pollution that can easily be pointed out. They are pollution points that you can say "It's coming from over there!"
•Non-point source pollution: any pollution that can come from a variety of different sources. It can be caused by rainfall or runoff. They are pollution points that you say "Maybe it's coming from here, or there, or over there."
Elimination Process:
A. Oil spill from a ship: This answer choice states specifically where the pollution is coming from, the ship. Someone with a matter of time could identify where the pollution came from. This is a point-source pollution example.
B. Sewage Water Outlet: This answer choice also states specifically where the pollution is coming from, the sewage water outlet. Someone could identify where the pollution is coming from, making this one also "point-source" pollution.
C. Runoff from a town: This answer choice vaguely states where the pollution is coming from, A town. It doesn't specify which town, and the pollution is runoff, which fits under the "Non-point source" pollution category.
D. Wastewater from a factory: This answer choice also states specifically where the pollution is coming from, the factory. One could identify where the pollution is coming from, make this as well a point-source pollution example.
A, B, and D are eliminated from this round.
To answer your question, C. Runoff from a town, would be your best answer choice.
