which of the following best completes the diagram?\ngaseous pollutant\nsecondary pollutant\nparticulate…

Brief Explanations:

Soot, dust, and smoke are all examples of particulate matter suspended in the air. Particulate pollutants are tiny solid or liquid particles in the atmosphere. Gaseous pollutants are in gas - form, secondary pollutants are formed through chemical reactions in the atmosphere, and noise pollution is related to sound, not the substances shown in the diagram.

Answer:

C. Particulate pollutant