Windfall gains are not included while calculating national income as__________.

Correct option is D

The correct answer is (d) There is no productive activity connected with them.

•  Windfall gains refer to unexpected, unearned income, such as profits from a sudden increase in stock prices or a lottery win. These types of income do not result from any productive economic activity.
•  Since national income is calculated by summing up all incomes generated from the production of goods and services in a country, windfall gains are excluded because they are not linked to actual production or value addition in the economy.
• Only income that arises from productive activities—such as wages, rents, interest, and profits earned through production—is included in the national income calculation.
  

Information about the other options:

• There is value addition: Incorrect. Windfall gains do not involve any value addition since they are not linked to the production of goods or services.
• It has already been included: Incorrect. Windfall gains are excluded, not included, in national income.
• There is no income: Incorrect. While windfall gains are a form of income, they are excluded because they are not derived from productive activities.

Information Booster:

Windfall Tax:

• It is a higher tax imposed on any particular industries when they make unusual and above-average profits.
• The term “windfall” refers to an unanticipated rise in profits, and the tax on windfall gains is known as the windfall tax.
  

National Income:

• National income is the total value of all goods and services produced within a country's borders in a given period time.
• National income is calculated using methods like the Production method, Income method, and Expenditure method, all of which focus on productive economic activities.