Answer: Option A
Answer: (a)
National Income is based on the production of goods and services.
A variety of measures of national income and output are used in economics to estimate,
total economic activity in a country or region,
including gross domestic product (GDP),
gross national product (GNP),
net national income (NNI), and
adjusted national income (NNI* adjusted for natural resource depletion).
All are especially concerned with counting the total amount of goods and services produced within some “boundary”.