Q. What is the best way to measure the economic growth of a country?
Answer: per capita income at constant prices
Notes: Per capita income or average income or income per person is the mean income within an economic aggregate, such as a country or city. It is calculated by taking a measure of all sources of income in the aggregate (such as GDP or Gross National Income) and dividing it by the total population. It does not attempt to reflect the distribution of income or wealth. It is often used as average income, a measure of the wealth of the population of a nation, particularly in comparison to other nations.