Correct Option: C

In circular motion, the magnitude of the velocity of the body is constant but the direction is constantly changing. This means that, even though the speed is not changing, the velocity is changing. This means that body moving in a circular is accelerating. At any instant, the direction of the velocity is a tangent to the circular path. A body moving at constant speed in a circular path experiences an acceleration directed towards the centre of the circular path. This acceleration is called a centripetal acceleration and is provided by a centripetal force. Overall, the displacement, velocity and acceleration are vector quantities. They change; but kinetic energy remains constant because the speed is constant.