Which term describes the ability to respond quickly to a stimulus?

• A. Reaction Time
• B. Balance
• C. Co-ordination
• D. Set

Answer: (A)

Reaction time describes how quickly you can respond to a stimulus. It measures the delay between sensing something and starting your movement, reflecting how fast you process information and mobilize the muscles. In sport, a quick reaction time helps you start an action sooner after a cue or opponent’s movement. Balance is about staying stable, not how fast you respond. Co-ordination is about the smooth timing and control of movements, not the speed of the initial response. Set refers to being prepared to act, which can influence reaction time, but the term that directly describes the speed of the response itself is reaction time.