Which component is NOT part of skill-related fitness?

Skill-related fitness encompasses components that are particularly important for performance in sports and physical activities. These components include agility, balance, coordination, power, reaction time, and speed. Each of these elements directly impacts a person's ability to perform athletic tasks effectively and efficiently.

Muscular strength, on the other hand, is classified under health-related fitness. It refers to the maximum amount of force that a muscle or group of muscles can exert. Health-related fitness components, which include cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition, focus on the overall health and physical condition of individuals and their ability to perform daily activities.

In summary, muscular strength is separate from skill-related fitness because it does not directly relate to the performance of diverse skills and sports activities, making it the correct answer in this context.