**Core Concept:** Human Development Index (HDI) is a summary index of three dimensions of development: health, education, and standard of living. These dimensions are further divided into specific indicators. The HDI reflects the overall level of development in a country and helps to compare countries globally.

**Why the Correct Answer is Right:** The correct answer 'D' refers to the economic development index (EDI), which is a similar concept but focuses on economic growth and development. While both HDI and EDI aim to assess overall development, they differ in the dimensions and indicators they consider. HDI takes into account health, education, and standard of living, while EDI focuses on economic growth and development.

**Why Each Wrong Option is Incorrect:**

A. **Health:** Though health is a part of HDI, option A is incorrect because it is not the only aspect considered in HDI.
B. **Education:** Education is a component of HDI, so option B is incorrect, similar to option A.
C. **Standard of Living:** The standard of living is part of HDI, making option C incorrect as well.

**Clinical Pearl:** While both HDI and EDI are useful tools for assessing overall development, healthcare professionals should be aware of the specific dimensions considered in each index. Understanding these differences can help in comparing the development levels of countries and assessing the impact of interventions on different aspects of development.

**Correct Answer:** Economic Development Index (EDI).