What should a bartender do if a customer appears intoxicated?

The correct choice emphasizes the bartender's responsibility to ensure the safety and well-being of customers. If a customer appears to be intoxicated, the appropriate action is to refuse to serve them additional alcohol. This is not only a matter of responsible service but also often a legal requirement in many jurisdictions. Bartenders must adhere to laws that prohibit serving alcohol to patrons who are visibly intoxicated, as it can lead to accidents, health issues, or legal consequences.

In addition to refusing to serve more alcohol, offering non-alcoholic options shows a commitment to the customer's welfare and provides an alternative that allows them to enjoy their time without further consumption of alcohol. This approach helps to de-escalate the potential for negative situations that could arise from continued drinking.

The other options imply actions that do not prioritize the customer's safety—serving more alcohol exacerbates the situation, while ignoring signs of intoxication completely neglects the bartender's duty to monitor patrons. Offering food could be beneficial in some contexts, but it does not address the core issue of ensuring that intoxicated individuals are not served more alcohol. Overall, the correct action supports responsible alcohol service practices, highlighting the importance of evaluating a customer’s state and acting accordingly.