Final answer:
In this situation, the server should offer to mediate between the two arguing guests.
Step-by-step explanation:
In this situation, the server should choose option c) Offer to mediate. Mediation involves the server actively assisting two arguing guests in finding a solution and understanding each other's perspectives. By listening attentively to both sides, the server can diplomatically suggest compromises or resolution strategies. This approach helps diffuse tension, fostering a peaceful and enjoyable environment for all guests. By demonstrating effective conflict resolution skills, the server contributes to a positive dining experience, ensuring that the guests feel heard and that their concerns are addressed, ultimately enhancing the overall quality of service and maintaining a welcoming atmosphere in the establishment.