Explanation:

In a vertical circular motion, a body moves in a circular path in a vertical plane. This motion can be observed in various scenarios such as a roller coaster or a swing. When analyzing the forces acting on the body during this motion, we can identify four main forces: force of gravity, centripetal force, normal reaction force, and centrifugal force.

1. Force of gravity: The force of gravity acts vertically downwards, towards the center of the Earth. It is responsible for pulling the body towards the Earth and giving it weight.

2. Centripetal force: The centripetal force is the force that keeps the body moving in a circular path. It always acts towards the center of the circle and is responsible for changing the direction of the body's velocity. In the case of vertical circular motion, the centripetal force can be provided by tension in a rope or the normal reaction force.

3. Normal reaction force: The normal reaction force is the force exerted by a surface to support the weight of an object resting on it. In the case of vertical circular motion, the normal reaction force acts perpendicular to the surface the body is moving on. It is responsible for preventing the body from falling through the surface.

4. Centrifugal force: The centrifugal force is often referred to as a "fictitious" or "pseudo" force. It is an apparent force that acts in the opposite direction to the centripetal force. In reality, it is not a true force but rather a result of inertia. In vertical circular motion, the centrifugal force would act away from the center of the circle and would be felt by the body as an outward force.

Answer:
The force that the body does not experience in vertical circular motion is the normal reaction force (Option C). This is because the normal reaction force only acts perpendicular to the surface the body is moving on, and in this case, the body is not in contact with any surface. In vertical circular motion, the body is typically suspended or held by a rope, and the centripetal force is provided by tension in the rope. Therefore, the body does not exert any force on a surface, and hence there is no normal reaction force.

It is important to note that the absence of the normal reaction force does not imply that the body is not experiencing any other forces. The force of gravity and the centripetal force are still acting on the body, ensuring its motion in a circular path.