What is a defining characteristic of a supermarket?

A defining characteristic of a supermarket is that it provides a self-service shopping experience. In a supermarket, customers can browse the aisles, select their own groceries, and take them to a checkout area without needing assistance from staff members for each item they wish to purchase. This model allows for a wide variety of products to be available under one roof, catering to the needs of the consumer while promoting a convenient shopping environment.

Self-service is fundamental to the supermarket concept, contrasting with other retail formats that may rely more on assistance, such as boutique shops or specialty stores. The emphasis on self-service not only enhances efficiency but also empowers customers to make their own choices based on preferences and needs. This model aligns with the intention of supermarkets to provide a comprehensive grocery shopping experience, including the ability to choose items at one's own pace.