Correct Answer: Human Development Index (HDI)

Solution : The correct answer is (c) Human Development Index (HDI).

The Human Development Index (HDI) is a composite index that measures the average achievements in three basic dimensions of human development: a long and healthy life (measured by life expectancy at birth), knowledge (measured by adult literacy rate and combined gross enrollment in primary, secondary, and tertiary education), and a decent standard of living (measured by gross national income per capita). The HDI provides a broader measure of human well-being and development beyond just economic indicators like GDP.