Which ability is characterized by quick starts, stops, and change of body directions?

The ability characterized by quick starts, stops, and changes in body direction is agility. This physical skill is essential in many sports and activities where rapid adjustments are needed to respond to various stimuli, such as an opponent's movements or environmental changes.

Agility involves not just speed, but also the ability to control movements effectively while changing direction, which is critical in activities such as basketball, soccer, and gymnastics. Training for agility often includes drills that enhance both speed and coordination to improve overall performance.

Other options, while important, do not specifically capture the essence of quick direction changes. For instance, balance refers to maintaining a stable position or control of the body's center of gravity, which is crucial but not specifically tied to rapid movement changes. Coordination involves the smooth and efficient movement of body parts, and while it contributes to agility, it does not solely encompass the ability to change direction swiftly. Endurance relates to sustained physical activity over time, which is less about rapid changes and more about prolonged performance.