What are the three main components of physical fitness?

The three main components of physical fitness focus specifically on the aspects that contribute to overall health and performance in physical activities. Cardiovascular endurance refers to the efficiency of the heart and lungs in supplying oxygen to the muscles during prolonged physical activity. Muscular strength is the ability of a muscle or group of muscles to exert force, which is vital for daily activities, sports, and overall functional fitness. Flexibility involves the range of motion of joints and muscles, which is essential for preventing injuries, improving posture, and enhancing overall movement efficiency.

The other options address important concepts related to fitness and well-being but do not encompass the core components of physical fitness as commonly defined. Agility, balance, and coordination are critical for athletic performance but are considered skills rather than foundational components of fitness. Cardiovascular health, nutrition, and mental health are vital for overall wellness but focus on different aspects of health rather than the physical fitness components specifically. Speed, endurance, and skill relate more to athletic prowess rather than the general categories of physical fitness. Thus, the focus on cardiovascular endurance, muscular strength, and flexibility provides a well-rounded understanding of physical fitness.