Q: Natural gas burns cleaner and produces less carbon dioxide than fuels of what type?


Read this paragraph and choose the correct option from the provided answers:

Natural gas burns cleaner than other fossil fuels. As a result, it causes less air pollution. It also produces less carbon dioxide than the other fossil fuels. Because it burns cleaner than other fossil fuels, natural gas has a good reputation. Still, natural gas does emit pollutants.

 Choices:

- renewable fuels

- solar energy

- biofuels

- fossil fuels


A:
fossil fuels