What is one of the key responsibilities of a soccer referee?

One of the key responsibilities of a soccer referee is to enforce the Laws of the Game. This encompasses ensuring that the match is played fairly and within the established rules. The referee's role includes making decisions on fouls, offsides, and other infractions, as well as maintaining control of the game, which is essential for the safety of the players and the integrity of the competition. By enforcing the Laws, the referee helps to promote fair play and sportsmanship on the field, which is crucial for the spirit of the game. This enforcement is supported by the referee's training and understanding of the rules, enabling them to make informed decisions throughout the match. The other options, while related to the overall environment of the match, do not fall under the primary responsibilities of a referee and are typically handled by other individuals or entities within the sport.