Which of the following is a step to more efficient gas mileage?

Lightening the amount of stuff in the car is an effective way to improve gas mileage. When a vehicle carries excess weight, the engine has to work harder to move it, which consumes more fuel. By reducing the load in the car, you can optimize fuel efficiency, as a lighter vehicle requires less energy to accelerate and maintain speed. This concept aligns with the basic principles of physics, where the force required to move an object increases with its mass.

Keeping the trunk full, performing frequent hard braking, and driving with windows down at high speeds can negatively impact fuel efficiency. A full trunk adds unnecessary weight, hard braking wastes kinetic energy and reduces efficiency, and open windows at high speeds can create drag, further reducing gas mileage. Therefore, minimizing the load in the vehicle is a practical and straightforward approach to achieving better fuel efficiency.