Fact 1: Acar engine usually converts gasoline into motion and heat through combustion.

Fact 2: An internal combustion engine burns a mixture of fuel and air.

Given the two facts above, answer the question "How does a car engine create movement?" with the following options: 
- Oil
 - Added pressure
 - electricity
 - activation energy
 - contracting
 - a hydraulic system
 - Burning water and salt
 - Burning fuel and air


 

        Burning fuel and air 