Explanation
The correct answer is (C) Surface run-off.
Surface run-off refers to the water that flows over the land surface after precipitation and can carry pollutants with it, but it is not considered an air pollutant.
(A) Noise, (B) SO2 (sulfur dioxide), and (D) NO2 (nitrogen dioxide) are all air pollutants. Noise pollution refers to excessive or disturbing noise that can have negative effects on human health and well-being. SO2 and NO2 are gases released from various sources, including industrial processes and vehicle emissions, and contribute to air pollution and environmental issues.
