Which term best describes physiological fitness related to body composition factors?

The term that best describes physiological fitness related to body composition factors is morphological fitness. This concept encompasses how the body's physical characteristics, such as muscle mass, fat distribution, and overall body composition, relate to one's health and performance capabilities. Morphological fitness focuses on the structural aspects of the body and their role in supporting movement and physical activity.

In contrast, muscular strength primarily refers to the ability of muscles to exert force, cardiovascular fitness is concerned with the efficiency of the heart and lungs in supplying oxygen during physical activity, and flexibility relates to the range of motion in joints and muscles. While these aspects of fitness are important, they do not specifically address body composition in the same way that morphological fitness does.