The correct answer is option 1, which matches the greenhouse gases with their major sources as follows:

- Carbon dioxide (CO2): The main source of carbon dioxide is the burning of fossil fuels, such as coal, oil, and gas. This includes activities like power generation, transportation, and industrial processes.

- Methane (CH4): Methane is emitted through sources such as enteric fermentation in cattle (bacteria in their digestive systems produce methane), natural gas and petroleum systems, coal mining, and the decay of organic waste in landfills.

- Chlorofluorocarbons (CFCs): CFCs are synthetic chemicals used in a variety of applications, including refrigeration, air-conditioning, and the production of foam products. These chemicals are responsible for the depletion of the ozone layer.

- Nitrous oxide (N2O): Nitrous oxide is mainly produced by agricultural and industrial activities, including the use of nitrogen-based fertilizers, burning of fossil fuels, and industrial processes.

It is important to note that the correct answer option correctly matches the greenhouse gases with their major sources.