When is it illegal for a server to serve alcohol?

Answer: B — When the customer is visibly intoxicated

Serving alcohol to a customer who is visibly intoxicated is illegal because it is against responsible service practices and can lead to significant safety issues. Over-serving alcohol contributes to harmful consequences, including accidents, injuries, and potential legal liability for both the server and the establishment. Laws are in place to ensure that servers monitor their patrons' alcohol consumption and refuse service when they observe signs of intoxication. This responsibility is critical for preventing alcohol-related incidents, which not only protect the well-being of customers but also uphold the integrity and reputation of the establishment. Training for servers emphasizes the importance of recognizing the signs of intoxication and adhering to legal requirements regarding alcohol service. The other scenarios presented do not inherently constitute illegal activities regarding the serving of alcohol. An establishment being closed means that service is not possible, but this does not apply to the legality of serving alcohol. Midnight does not mark a universal cutoff for alcohol service, as different jurisdictions may have different laws regarding last call. Similarly, serving alcohol during a holiday celebration is not illegal unless specific local restrictions are in place, which is not the case generally across the board.