You are presented with the question "If you want to use a gasoline engine, what must you do with the gasoline?" and the following answer choices: 
- drain the gasoline
 - wash the gasoline
 - cool down the gasoline
 - move to different locations
 - adding heat
 - ignite the gasoline
 - vaporization
 - evaporation

Now knowing that using a gasoline engine requires burning gasoline and when the fuel is ignited, it burns with oxygen, choose the best answer.


 

      ignite the gasoline   