Which of these is an indicator of economic development?

The correct answer is D. All of the above are indicators of economic development.

• Per capita income is a measure of the average income of a country’s citizens. It is calculated by dividing the country’s gross national income (GNI) by its population. A high per capita income indicates that a country’s citizens are generally wealthy.
• Literacy rate is the percentage of a country’s population that can read and write. A high literacy rate indicates that a country’s citizens are generally educated.
• The Human Development Index (HDI) is a composite index of three indicators: life expectancy, education, and per capita income. It is used to measure the level of human development in a country. A high HDI indicates that a country’s citizens have a high standard of living.

Economic development is the process of increasing the wealth and standard of living of a country’s citizens. It is often measured by indicators such as per capita income, literacy rate, and HDI.