Using a gasoline engine requires burning gasoline, and when the fuel is ignited, it burns with oxygen. Given these facts, if you want to use a gasoline engine, what must you do with the gasoline among the following options:
- drain the gasoline
 - wash the gasoline
 - cool down the gasoline
 - move to different locations
 - adding heat
 - ignite the gasoline
 - vaporization
 - evaporation


 

      ignite the gasoline   