Which fitness component is the ability to move quickly?

• A. Coordination
• B. Reaction Time
• C. Body Composition
• D. Speed

Answer: (D)

Speed is the ability to move quickly, capturing the rate at which you can cover distance. It directly describes how fast you can travel, which is why it best fits "the ability to move quickly." Reaction time, on the other hand, is about how fast you start moving after a stimulus, not how fast you actually move once you’re moving. Coordination refers to how smoothly and efficiently you organize movements, not the raw pace of movement. Body composition deals with body makeup (fat vs. lean mass) and doesn’t convey speed. So speed is the fitness component that matches the idea of moving quickly. For reference, sprinting a short distance or running a fast 40-yard dash exemplifies speed in action.