The ‘income’ component of HDI is measured by:

Gross State Domestic Product (GSDP)
Per capita income
Poverty levels
Income inequality

The correct answer is: b) Per capita income.

Per capita income is a measure of the average income earned by each person in a country. It is calculated by dividing the total income of a country by its population. Per capita income is often used as a measure of a country’s economic development.

Gross State Domestic Product (GSDP) is the total value of all goods and services produced in a state in a given year. It is calculated by adding up the value of all final goods and services produced in the state, including both goods and services produced by businesses and goods and services produced by households.

Poverty levels are a measure of the percentage of people in a country who live below a certain income level. The poverty line is the income level below which a person is considered to be poor. Poverty levels are often used as a measure of a country’s social development.

Income inequality is a measure of the difference in income between the richest and poorest people in a country. It is calculated by dividing the income of the richest 1% of the population by the income of the poorest 1% of the population. Income inequality is often used as a measure of a country’s economic and social inequality.

In conclusion, the ‘income’ component of HDI is measured by per capita income. Per capita income is a measure of the average income earned by each person in a country. It is calculated by dividing the total income of a country by its population. Per capita income is often used as a measure of a country’s economic development.