Rain washing oily runoff from a road into a river that runs alongside the road is an example of point source pollution or nonpoint source pollution? Help pls.

This would be an example of nonpoint source pollution.

Explanation:

The source of point source pollution is typically factories and powerplants, leading to more air and water transferred pollutants and becoming easier to track. Nonpoint source pollution is the opposite of point-source pollution, with pollutants being released in a wide area. Since the rainwater would be washing the oils and particles into the water, it would be considered runoff. Runoff is one of the leading causes of point source pollution. I hope this helps. ^_^

currents is the correct answer.

it's c. (to reduce the greenhouse effect/carbon gasses)