Which term describes the portion of the economy that fulfills the exchange function, provides market availability of commodities, and brings together consumers and providers of services, including wholesale and retail trade, transport, and personal and professional services of all kinds?

• A. Primary activity
• B. Tertiary activity
• C. Secondary activity
• D. Quaternary activity

Answer: (B)

The question is about which part of the economy handles services and the exchange that connects buyers with sellers. The tertiary sector includes wholesale and retail trade, transport, and a wide range of personal and professional services, and it provides the market access and mechanisms that bring consumers together with providers. It acts as the intermediary layer that facilitates distribution, sales, and service delivery, rather than producing goods itself. The other sectors focus on making or extracting goods—primary is about harvesting resources, secondary is manufacturing and construction, and quaternary covers knowledge-based activities like information services and research. So the described functions belong to the tertiary sector.