Option 1, oxides of nitrogen and sulfur, is the correct answer for the cause of acid rain. Acid rain occurs when emissions of nitrogen oxides (NOx) and sulfur dioxide (SO2) are released into the atmosphere. These gases are mainly produced from the burning of fossil fuels, such as coal and oil, in power plants, factories, and vehicles. When released into the air, nitrogen oxides and sulfur dioxide mix with water vapor and other chemicals, forming nitric acid and sulfuric acid. These acids then fall to the ground as acid rain.

Option 2, carbon dioxide and carbon monoxide, do not directly cause acid rain. Carbon dioxide (CO2) is a greenhouse gas that contributes to climate change but does not react with water to form acid rain. Carbon monoxide (CO) is a toxic gas produced during incomplete combustion, but it is not a significant contributor to acid rain formation.

Option 3, ozone and carbon dioxide, is incorrect. Ozone (O3) is not a main contributor to acid rain formation. While carbon dioxide does play a role in climate change, it does not directly cause acid rain.

Option 4, carbon monoxide and nitrogen, is incorrect. As mentioned earlier, carbon monoxide is not a