Which of the following is NOT a responsibility of the second referee?

The correct choice indicates that the second referee does not whistle for every serve and dead ball. In volleyball, the first referee primarily handles the duties associated with starting play and signaling for dead balls, which includes using their whistle for every serve. The second referee, on the other hand, is focused on monitoring specific aspects of the game, such as player substitutions and ensuring match procedures are followed.

The responsibilities of the second referee include confirming that substitutions are executed according to the rules and guiding the match procedures to maintain flow and organization on the court. They also oversee certain aspects of the game to ensure fairness, such as calling faults on players, particularly those that may not be visible to the first referee. Therefore, while the second official plays a critical role, whistling for every serve and dead ball is not within their designated responsibilities.