Concept:National income includes only goods and services exchanged in the market.
Explanation:Full-time housewives perform valuable services, such as cooking, cleaning, and childcare.
These services are unpaid and not sold in the market.
National income estimators do not include unpaid domestic work in their calculations.
Therefore, a country with many full-time housewives will record national income far below the true total production.
Hence, the national income figures will be grossly under-estimated.
Answer:D. figures will be grossly under-estimated