You are presented with the question "What are burned to produce electricity?" and the following answer choices: 
- fossil fuels
 - organic molecules
 - kinetic energy
 - icicles
 - cigarettes
 - energy
 - glaciers
 - carbon dioxide

Now knowing that coal is used to produce electricity by burning in coal-fire power stations and fossil fuels are coal, oil and natural gases, choose the best answer.


 

 fossil fuels        