Respuesta :
Air pollution is caused inside the house by smoking cigarettes. The correct option is A.
What is air pollution?
Air pollution is the contamination of air by the introduction of smoke, dust particles, exhaust gases from the vehicles. chemical pollutant gases from the chimney of factories.
Growing house plants reduces air pollution. Opening shades to let sunlight in is not cause for air pollution. Air circulation by fan is just for self purpose or removing dust from homes.
Thus, correct option is A.
Learn more about air pollution.
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