Referees are officials responsible for enforcing the rules of a sport during a game or match. They ensure fair play by monitoring the actions of players and making decisions on fouls, penalties, and other rule violations. Referees are trained to understand the specific regulations of the sport they officiate, whether it be soccer, basketball, or football. In addition to making calls during the game, referees also communicate with players, coaches, and other officials. They often use signals and whistles to indicate their decisions. Their role is crucial in maintaining the integrity of the game and ensuring that all participants adhere to the established rules.