Question

The Supermarket operates all the principle of self Service: can someone tell me the
meaning of this sentence.​

Answer 1

Answer:

Supermarkets typically are chain stores, supplied by the distribution centers of their parent companies, thus increasing opportunities for economies of scale. Supermarkets usually offer products at relatively low prices by using their buying power to buy goods from manufacturers at lower prices than smaller stores can.

Explanation:

that's all I know ;-;

Answer 2

Explanation:

Self-checkouts (SCOs), also known as assisted checkouts (ACOs) or self-service checkouts, are machines that provide a mechanism for customers to complete their own transaction from a retailer without needing a traditional staffed checkout.