The correct answer is: C. Ozone
Photochemical smog is a type of air pollution that is formed when sunlight reacts with pollutants in the air, such as nitrogen oxides and hydrocarbons. Ozone is one of the main components of photochemical smog, and it can cause a variety of health problems, including respiratory problems, eye irritation, and headaches.
Hydrocarbons are organic compounds that contain hydrogen and carbon. They are found in gasoline, natural gas, and other petroleum products. When hydrocarbons are released into the air, they can react with nitrogen oxides in the presence of sunlight to form ozone.
Nitrogen oxides are gases that are produced when fossil fuels are burned. They are also found in car exhaust and power plant emissions. Nitrogen oxides can react with hydrocarbons in the presence of sunlight to form ozone.
Methane is a gas that is produced by natural gas, landfills, and agriculture. It is also a greenhouse gas that contributes to climate change. Methane does not play a significant role in the formation of photochemical smog.