Concept:Economic growth is best measured by the total value of goods and services produced in an economy.
Explanation:Economic growth refers to a sustained increase in a country’s real output or income over time.
The most reliable index for this is the National Income, usually measured as real
GDP or
GNP.
Price indices, such as the Wholesale Price Index, Consumer Price Index, or Retailer’s Price Index, only measure changes in price levels or inflation, not economic growth.
Therefore, an increase in national income or output indicates that economic growth has occurred.
Answer:C. National Income