Which sentence is the BEST example of how to use a fact to support this thesis statement? Carefully adjusting the aerodynamics of a vehicle can substantially improve its gas mileage. Wind resistance refers to the force exerted on a car by the air that moves around it as the car moves. As aerodynamics improve, gas mileage improves--since an aerodynamic car encounters less wind resistance. As wind resistance decreases on a car as it drives down the road, the aerodynamics of the car improve. Aerodynamics is the branch of science that studies how air moves over and around objects, such as cars.