Which development helps decide if the ball crosses the goal line in football?

Which development helps decide if the ball crosses the goal line in football?

• A. Video replay technology
• B. Keyboard sensors
• C. Lighter balls
• D. Hawk-Eye

Answer: (D)

The important idea is having a reliable method to determine the moment the ball crosses the goal line, without relying on a referee’s view alone. Hawk-Eye uses several high-speed cameras placed around the goal to track the ball in three dimensions as it approaches the line. By triangulating the ball’s position, it can decide precisely when any part of the ball crosses the line and instantly communicates that decision to the referee. This provides a fast, accurate call, reducing doubt and controversy over goals. Other options like keyboard sensors wouldn’t measure the ball’s position at the line, and lighter balls don’t change how the line is detected. Video replay can review decisions after the fact, but Hawk-Eye offers an automatic real-time verdict for goals.

The important idea is having a reliable method to determine the moment the ball crosses the goal line, without relying on a referee’s view alone. Hawk-Eye uses several high-speed cameras placed around the goal to track the ball in three dimensions as it approaches the line. By triangulating the ball’s position, it can decide precisely when any part of the ball crosses the line and instantly communicates that decision to the referee. This provides a fast, accurate call, reducing doubt and controversy over goals. Other options like keyboard sensors wouldn’t measure the ball’s position at the line, and lighter balls don’t change how the line is detected. Video replay can review decisions after the fact, but Hawk-Eye offers an automatic real-time verdict for goals.