Which term best describes the need for quick movements in sports?

The term that best describes the need for quick movements in sports is agility. Agility refers to the ability to move quickly and change direction effectively while maintaining control. This skill is crucial in many sports, such as football, basketball, and tennis, where athletes must respond rapidly to the dynamics of the game, often requiring them to shift their body position and speed at a moment's notice.

While speed is related to how fast one can move, agility emphasizes the combination of speed with the ability to change direction swiftly. Therefore, agility not only involves moving quickly but also entails the coordination and balance necessary to execute those quick movements effectively in various sports scenarios.