You are presented with the question "using an what requires burning flammable liquid" and the following answer choices: 
- light bulb
 - engine
 - toaster
 - Decibels
 - cigars
 - barrel
 - Cooking
 - battery

Now knowing that using a gasoline engine requires burning gasoline and gasoline and flammable liquid related burns, however, are a preventable problem, choose the best answer.


 

  engine       