To start a body moving, which of the following must be overcome?

The correct response is the requirement to overcome static friction when starting a body moving. Static friction is the force that resists the initiation of motion between two surfaces that are in contact and at rest relative to each other. It needs to be overcome to initiate movement.

Once the force applied exceeds the maximum static friction force, the object will start to move. It's important to recognize that static friction is usually higher than kinetic friction, which is the friction encountered when an object is already in motion. Thus, understanding the role of static friction is crucial in scenarios where motion is beginning.

By addressing why static friction must be overcome, it highlights its fundamental role in physics related to motion. The other types of friction, such as kinetic, fluid, and rolling friction, pertain to different contexts and conditions of motion but are not directly involved in the transition from rest to motion.