Which of the following is an attribute that falls under skill-related physical fitness?

Agility is an attribute that is considered part of skill-related physical fitness. Skill-related fitness components are those that contribute to a person's ability to perform effectively in sports and other physically demanding activities. Agility specifically refers to the ability to move quickly and change direction with ease. It is crucial for athletes who need to maneuver swiftly during activities such as running, jumping, and evading opponents.

In contrast, attributes like muscular strength, flexibility, and cardiorespiratory fitness are categorized as health-related physical fitness components. Muscular strength involves the maximum amount of force that a muscle can generate; flexibility refers to the range of motion available at a joint; and cardiorespiratory fitness indicates the efficiency of the heart and lungs during exercise. While all are important for overall fitness and health, they do not specifically enhance skills in sports and physical activities like agility does.