Which of the following must a server assess while sizing up a customer?

In the context of alcohol management, assessing whether a person is intoxicated is crucial for responsible service. This evaluation is vital because servers have a legal and ethical obligation to prevent over-serving alcohol to patrons. Recognizing signs of intoxication helps ensure the safety of the individual and others around them. By identifying cues such as slurred speech, impaired coordination, or unusual behavior, servers can make informed decisions about responsibly serving alcohol, avoiding potential legal repercussions, and maintaining a safe environment.

The other options, while they may provide some context about the customer, do not directly relate to the primary responsibility of assessing a person's ability to consume more alcohol safely. Understanding whether a customer is ordering food or their attire does not impact their level of intoxication or the decision to serve more alcohol. Knowing if someone is a regular customer can provide insights into their past behavior, but the primary concern in this scenario is ensuring that alcohol service is managed in a safe and legal manner.