Which of the following does not supply smoke that contributes to air pollution?

A. factories

B. automobiles

C. home fires

D. nuclear power plants

The correct answer option is D. nuclear power plants.

Explanation:

Unlike the fossil fuel fired power plants, the nuclear power plants do produce smoke that contributes to air pollution. The reason being that they do not produce Carbon Dioxide while operating.

While factories, automobiles and home fires cause air pollution which results in emission of harmful air pollutants from burning the fossil fuels such as oil, coal, natural gas.

Answer: The answer is D. Nuclear power plants.