Answer:
I have no clue and im a junior im so sorry your teach sucks
Answer;
D.
Coal-fired stoves, factories, and power plants
Explanation;
-Air pollution from factories and coal-fired power plants includes sulfur dioxide, nitrogen oxides, particulate matter (PM), and heavy metals, leading to smog, acid rain, toxins in the environment, and numerous respiratory, cardiovascular, and cerebrovascular effects.