Which statement best describes point-source pollution and provides a correct example?

• A. Point-source pollution originates from a single identifiable outlet, such as a factory discharge pipe.
• B. Point-source pollution originates from diffuse sources over large areas, such as agricultural runoff.
• C. Point-source pollution is only associated with air pollution.
• D. Point-source pollution cannot be traced to a specific facility.

Answer: (A)

Point-source pollution comes from a single, identifiable source, which makes it possible to trace the pollution back to that outlet. The statement that describes a single identifiable outlet, such as a factory discharge pipe, matches this idea exactly. Non-point-source pollution, by contrast, comes from many diffuse sources spread across a landscape—think agricultural runoff from fields or runoff from urban areas—where there isn’t a single outlet to target. It’s also not limited to air pollution; point-source pollution can involve water discharges or air emissions from a specific facility. And since the defining feature is traceability to a source, the idea that it cannot be traced to a specific facility is incorrect.