Which of the following are components of physical fitness?

The components of physical fitness encompass a range of elements that are essential for overall health and athletic performance. Cardiovascular endurance is the ability of the heart and lungs to supply oxygen to the muscles during prolonged physical activity. Muscular strength refers to the amount of force a muscle can produce, while flexibility is the range of motion available at a joint. Body composition is the ratio of fat to lean mass in the body, which is crucial for understanding an individual’s health and fitness status.

Option A includes all of these key components, making it the most comprehensive and accurate choice. Together, these elements provide a well-rounded framework for assessing an individual's physical fitness levels and designing an effective training program.

The other options encompass some relevant aspects but lack the full range of components. For example, while muscular endurance, mental strength, and skill-related fitness are important for athletic performance, they do not completely represent the essential elements of physical fitness as defined by leading health and fitness organizations.