Which of the following is an acceptable form of identification to verify a customer's age?

A driver's license is an acceptable form of identification to verify a customer's age because it is issued by a government authority and includes essential information such as the individual's date of birth, photo, and signature. This makes it a reliable form of ID to ensure that the person is of legal drinking age.

In contrast, while a passport is also a valid form of ID, it is more commonly used for international travel. It might not be the first choice in every day scenarios like bar entry or purchase of alcohol, although it is certainly acceptable. A school ID and an employee ID generally do not provide sufficient verifiable information regarding age or do not meet the necessary legal requirements for age verification in alcoholic beverage service. These types of identification may not include a date of birth or could be easily manipulated, making them unsuitable for this purpose.