What is pollution and how do point-source and non-point-source pollution differ in management strategies?

What is pollution and how do point-source and non-point-source pollution differ in management strategies?

• A. Pollution is harmful substances entering the environment; point-source comes from a single site; non-point-source from diffuse sources. Regulation and permits for point sources; land-use and best practices for non-point sources.
• B. Pollution is harmful substances entering the environment; point-source comes from a single site; non-point-source from diffuse sources. Management relies on global treaties for all pollution.
• C. Pollution is harmful substances entering the environment; point-source comes from diffuse sources; non-point-source from a single site. Management differs but not specified.
• D. Pollution is only air pollution; point-source refers to noise; non-point-source refers to temperature.

Answer: (A)