You are presented with the question "What does an automobile create when it burns fuel?" and the following answer choices: 
- Acids
 - tar
 - Energy.
 - heat
 - Gases
 - gas
 - sweat
 - energy

Now knowing that operating an automobile usually requires fossil fuels and automobiles and the burning of fossil fuels generate gases such as sulphur dioxide, choose the best answer.


 

     Gases    