Final answer:
A server's responsibility includes monitoring food and alcohol consumption of customers.
Step-by-step explanation:
The responsibility of a server includes monitoring and observing the level of food and alcohol consumption of customers. This is important to ensure that customers are not over-served or intoxicated, as it could lead to legal and safety issues. Servers are trained to keep an eye on customers and to assess their behavior and consumption levels, and take appropriate actions if necessary.