Explanation: Retail Trading: This is the business activity concerned with the sale of goods directly to the consumers.

• Most of the retail trading takes place in fixed establishments or stores solely devoted to selling.
• Street peddling, handcarts, trucks, door-to-door, mail-order, telephone, automatic vending machines and internet are examples of non-store retail trading.
• Consumer cooperatives were the first of the large-scale innovations in retailing.
• Departmental stores delegate the responsibility and authority to departmental heads for purchasing of commodities and for overseeing the sale in different sections of the stores.
• Chain stores can purchase merchandise most economically, often directing the goods to be manufactured to their specification.
• They employ highly skilled specialists in many executive tasks. They can experiment in one store and apply the results to many.

Source: NCERT