Which of the following statements is/are true about quaternary activities?

Personnel working in office buildings, elementary schools and university classrooms, hospitals and doctors offices, theatres, accounting and brokerage firms all belong to this category of services.

The correct answer is Option 3: Personnel working in office buildings, elementary schools and university classrooms, hospitals and doctors offices, theatres, accounting and brokerage firms all belong to this category of services.

Option 1:“The Quaternary Sector has replaced most of the primary and secondary employment as the basis for economic growth.” Incorrect. Quaternary sector has not replaced primary and secondary sectors. It is the Quaternary Sector along with the Tertiary Sector has replaced most of the primary and secondary employment as the basis for economic growth (as per NCERT).

Option 2: Quaternary activities can not be outsourced.” Incorrect. Quaternary activities like IT services, research, data processing can be outsourced, especially in modern economies.

Option 3: Personnel working in office buildings, elementary schools and university classrooms, hospitals and doctors offices, theatres, accounting and brokerage firms all belong to this category of services. Correct . These represent service-based and knowledge-oriented activities, which are broadly associated with higher-level services including quaternary sector.