The correct answer is: D. NNP + Depreciation.
GNP stands for Gross National Product. It is the market value of all final goods and services produced in a country in a given year, plus net income from abroad. NNP stands for Net National Product. It is the market value of all final goods and services produced in a country in a given year, minus depreciation. Depreciation is the
decrease in the value of capital goods over time due to wear and tear.Therefore, GNP can be defined as NNP plus depreciation.
Option A is incorrect because NNP is already included in GNP.
Option B is incorrect because exports are not included in GNP. GNP measures the value of goods and services produced within a country, not the value of goods and services that are sold to other countries.
Option C is incorrect because indirect taxes are not included in GNP. Indirect taxes are taxes that are levied on goods and services, such as sales taxes and value-added taxes. These taxes are not included in GNP because they are not considered to be part of the value of the goods and services that are being produced.