Which term describes service sectors that require a high level of specialized knowledge or skill, often associated with high-level management?

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

Answer: (C)

Think about how service sectors are described by the level of knowledge and responsibility involved. Quaternary covers knowledge-intensive work like research, advanced IT, and specialized education. Quinary, on the other hand, targets the top-tier decision-making and leadership side—roles that require highly specialized skills and strategic management, such as executives, top government officials, and elite advisory positions. The question is asking for sectors that demand this high level of expertise and are tied to high-level management, so the best fit is quinary activity. The other sectors map to different focuses: tertiary is general services, secondary is manufacturing, and primary is extraction.