$$\textbf{Correct option: }$$ D
$$\textbf{Solution: }$$
$$\textbf{Option (D) }$$
$$\bullet$$The contamination caused in the environment air due to the excess presence of greenhouse gases is known as air pollution.
$$\bullet$$The automobiles are the major cause of air pollution as the vehicular pollutants generated can deteriorate the environmental and human conditions.
$$\bullet$$The increase in carbon dioxide production is caused mainly by the burning of fossil fuels, woods, volcanic eruptions, and respiration.
$$\bullet$$The use of refrigerators and air conditioners adds the concentration of chlorofluorocarbons.
Hence, the correct option is (d).