Which of the following is a skill-related fitness component?

Agility is classified as a skill-related fitness component because it directly involves the ability to rapidly change direction and control the body's movement in response to varying situations, which is essential in many sports and physical activities. It is crucial for performance in sports like basketball, soccer, and tennis, where quick changes in movement can lead to better results.

In contrast, muscular endurance, flexibility, and body composition are generally categorized under health-related fitness components. Muscular endurance refers to the ability of a muscle or group of muscles to sustain repeated contractions over time, flexibility relates to the range of motion in joints and muscles, and body composition describes the proportions of fat and non-fat mass in the body. While all components are important for overall fitness and health, agility stands out as key to enhancing performance in skill-oriented activities.