When customer attempt to purchase alcoholic beverages who decides whether the sale is legal or not?

The legality of an alcoholic beverage sale primarily depends on local laws and regulations, which dictate the legal drinking age and licensing requirements for retailers. Store employees, typically trained in responsible beverage service, are responsible for verifying the customer's age and ensuring compliance with these laws before completing the sale. If there are any doubts about the legality of the sale, the retailer has the authority to refuse the transaction. Ultimately, enforcement of alcohol laws is overseen by local authorities and regulatory agencies.