Which of the following is a liability consideration for serving alcohol in Illinois?

Confirming the customer's age is a crucial liability consideration when serving alcohol in Illinois. It is a legal requirement to verify that patrons are of legal drinking age, which is 21 years old. Failing to check identification can result in serious legal consequences, including fines or the loss of a liquor license. Additionally, serving alcohol to minors not only endangers their safety but also exposes the establishment to significant liability risks. By ensuring that all customers are of age, establishments can mitigate legal issues and promote a safer drinking environment.

Providing free appetizers, serving until closing time, and offering multiple drink specials may be relevant to customer service and sales strategies but do not directly tie into the legal liability associated with the responsible service of alcohol. These practices might not necessarily affect the legal compliance related to age verification and responsible serving.