Final answer:
The centripetal force is the force that acts towards the center of the circle and keeps an object in circular motion.
Step-by-step explanation:
The correct answer is C) Centripetal force.
Centripetal force is the force that acts towards the center of the circle and keeps an object in circular motion. In the case of a car going in a circle, the centripetal force is provided by the friction between the tires and the road. This friction force allows the car to turn and maintain its circular path.
Other forces mentioned, such as gravitational force, tension force, and frictional force, can also be involved in different situations but may not be the direct cause of the circular motion.