What is the primary role of a line judge in volleyball?

The primary role of a line judge in volleyball is to make calls on line violations, which involves monitoring whether the ball lands inside or outside the designated lines of the court. This is crucial for maintaining the integrity of the game, as their decisions directly impact the scoring. Line judges are positioned at the sidelines and are responsible for observing the ball's trajectory and its interaction with the lines, ensuring that the rules surrounding court boundaries are adhered to.

In addition to their essential function in signaling whether a ball is in or out, line judges also assist the referees by providing visual cues, such as flags, to indicate their calls. Their accuracy and attention to detail are vital, as these decisions can often be pivotal in determining the outcome of a point or play. This highlights the importance of the role in maintaining fair play and accurate scoring throughout the match.

Other options involve responsibilities that fall outside the scope of a line judge's duties. For example, managing the scoreboard and coaching the team are roles designated to other officials or personnel within the sport, while determining the winner of a match is solely the responsibility of the referees based on gameplay outcomes.