What is the role of the fourth official?

The fourth official plays a crucial role in managing a soccer match by assisting the referee and ensuring that everything runs smoothly both on and off the field. This official is responsible for managing substitutions, which involves overseeing the process when players are brought on or off the field. Additionally, the fourth official monitors the technical area, which includes the coaches and team staff to ensure they adhere to the rules and maintain proper conduct during the match.

This multifaceted role helps to relieve some of the responsibilities from the main match officials, enabling them to focus on their duties on the field. The fourth official can also provide support in situations such as player misconduct or when the referee needs help managing the game's flow.

Other options do not accurately reflect the responsibilities associated with the fourth official. Teaching players the game and conducting post-match interviews fall outside the responsibilities outlined in soccer rules. Calling offside decisions is solely the responsibility of the assistant referees. Thus, the correct choice highlights the essential functions of the fourth official in maintaining the integrity and smooth operation of the soccer match.