Selling goods in small quantities directly to consumers.

• A. Sponsorship
• B. One-stop shopping
• C. Billboard (hoarding)
• D. Retailing

Answer: (D)

Retailing is the activity of selling goods in small quantities directly to consumers for personal use. It sits at the end of the distribution channel, turning goods into purchases by individual shoppers through stores, online shops, or other direct-to-consumer outlets. This description matches selling goods in small quantities directly to consumers because it focuses on the final sale to end users. Sponsorship involves funding events or causes, not selling to customers. One-stop shopping emphasizes convenience and assortment, not the act of selling itself. Billboards are a promotional advertising medium, not the sale of goods. So retailing best fits the description since it centers on selling directly to individual buyers.