Here's a problem to solve: A car is traveling on a highway at a constant velocity. Which statement best describes the forces acting on the car?

Among the 4 following options, which is the correct answer?

- A: The forces acting on the car are balanced.
 
- B: The forces acting on the car are in the same direction.
 
- C: The forces acting on the car are continuing to increase.
 
- D: The forces acting on the car are equal to the force of gravity.
 