The correct answer is C. Chlorofluorocarbons (CFCs).
CFCs are a group of chemicals that were once widely used in refrigerators, air conditioners, and aerosol cans. They are very stable and do not break down easily in the atmosphere. However, when they reach the stratosphere, they are broken down by ultraviolet radiation and release chlorine atoms. These chlorine atoms react with ozone molecules, destroying them.
Nitrous oxide is a greenhouse gas that is produced by human activities such as agriculture
and the burning of fossil fuels. It is also released by volcanoes. Nitrous oxide can contribute to ozone depletion, but it is not as significant a factor as CFCs.Carbon dioxide is another greenhouse gas that is produced by human activities. It is not a major factor in ozone depletion.
Methane is a greenhouse gas that is produced by natural sources such as wetlands and livestock. It is also released by human activities such as the production and transportation of natural gas. Methane is not a major factor in ozone depletion.