Which component of fitness refers to the ability to perform daily tasks with vigor and without fatigue?

The correct choice highlights functional fitness, which is a crucial aspect of overall health and wellness. This component of fitness encompasses the ability to perform everyday activities efficiently and effectively, ensuring that individuals are capable of handling the physical demands of their daily lives without excessive fatigue.

Functional fitness focuses on movements that mirror those used in daily tasks, improving strength, endurance, coordination, balance, and flexibility. This well-rounded approach helps in maintaining independence and enhancing quality of life, especially as one ages.

In contrast, cardiovascular endurance refers to the heart and lungs' ability to supply oxygen during sustained physical activity, while muscular strength and flexibility address specific physical attributes rather than the overall capacity to engage in everyday activities. Thus, functional fitness is the best representation of performing daily tasks with vigor.