When pushing a car into a driveway, the most common horizontal forces present are the pushing force and the frictional force.
- Pushing force: This is the force exerted by a person pushing the car.
- Frictional force: This is the force exerted by the surface of the driveway resisting the motion of the car due to the interaction between the tires and the surface.
The gravitational force and normal force act vertically, so they are not horizontal forces. Therefore, the correct answer is Pushing force, Frictional force.