Explanation
Why Correct: The Human Development Index (HDI) is a composite statistic of life expectancy, education, and per capita income indicators, which are used to rank countries into four tiers of human development. The three dimensions are a long and healthy life (Health Index), knowledge (Education Index), and a decent standard of living (Income Index). The Price Index, which measures the average change in prices over time, is not a component of the HDI.
Distractor Analysis: The Health Index is a component of the HDI, measured by life expectancy at birth. The Education Index is a component, measured by mean years of schooling and expected years of schooling. The Income Index is a component, measured by Gross National Income (GNI) per capita. The Price Index is not a component; it is used in economic indicators like inflation and purchasing power parity, not in the HDI.
Takeaway: The HDI was developed by the Pakistani economist Mahbub ul Haq and introduced by the United Nations Development Programme (UNDP) in its first Human Development Report in 1990. The HDI value ranges from 0 to 1, with higher values indicating higher human development.