The concept of Human Development Index was developed by __________.

Mahbub-ul-Haq

The correct answer is Option (2) → Mahbub-ul-Haq

The concept of the Human Development Index (HDI) was developed by Pakistani economist Mahbub-ul-Haq. The Human Development Index is a composite statistical measure that assesses a country's average achievements in three basic dimensions of human development: health, education, and standard of living.