Which of the following describes a synergist?

A synergist is defined as a muscle that assists the prime mover (or agonist) in performing a specific movement. The role of a synergist is crucial in stabilizing joints and refining the movement produced by the prime mover. By minimizing unwanted movements and stabilizing surrounding joints, synergists ensure that the intended action of the prime mover is executed more efficiently and effectively. This stabilization prevents injuries and enhances performance during exercises.

In this context, the correct choice identifies the role of synergists as those muscles that minimize movement and stabilize joints. Understanding this function is important for designing effective workout programs and ensuring proper form during exercises, thereby maximizing safety and performance outcomes.