which process is a source of outdoor air pollution?\nreleasing mold particles from an air - conditioning…

which process is a source of outdoor air pollution?\nreleasing mold particles from an air - conditioning vent\nemitting particles from a dump truck\nreleasing radon gas from a generator\nemitting carbon monoxide from a heater
Answer
Answer:
B. emitting particles from a dump truck
Brief Explanations:
Releasing mold from AC vent, radon from generator, and CO from heater are indoor - related. Emitting particles from a dump truck is an outdoor source of air pollution.