If using a gasoline engine requires igniting gasoline, then if you want to use a gasoline engine, what must you do with the gasoline?

Answer choices:
- drain the gasoline
 - wash the gasoline
 - cool down the gasoline
 - move to different locations
 - adding heat
 - ignite the gasoline
 - vaporization
 - evaporation

 

      ignite the gasoline    