What aspect of fitness does 'body composition' analyze?

Body composition specifically analyzes the proportion of fat and non-fat mass in the body. This aspect of fitness is crucial because it provides insight into an individual's overall health and fitness level beyond just body weight. A healthy body composition is typically characterized by a lower percentage of body fat and a higher percentage of lean mass (muscles, bones, organs, etc.).

Understanding body composition helps in assessing fitness and health risks; for instance, high levels of body fat are often associated with various health problems, whereas a balanced body composition suggests a healthier and more fit individual. This analysis is pivotal for creating tailored fitness and nutrition plans aimed at achieving specific health and performance goals.

In contrast, the other choices focus on different components of fitness, such as muscular strength, cardiovascular endurance, and flexibility, which, while essential, do not define body composition specifically.