Concept:National income can be underestimated when some productive activities are not captured in official records.
Explanation:Subsistence production involves goods and services made for the producer’s own use, not for sale in the market.
Since these goods never enter the market, they are difficult to measure and are often left out of national income accounts.
As a result, the recorded national income becomes lower than the actual value.
Availability of skilled statisticians improves accuracy, not underestimation.
A high volume of exports increases recorded income.
Emigration of skilled workers reduces output but does not directly cause underestimation of national income figures.
Answer:D. Subsistence production