The Human Development Index (HDI) is a composite measure focusing on:

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. A country scores higher HDI when the values of its indicators are higher. The HDI was developed by the United Nations Development Programme (UNDP) and is published annually as part of the Human Development Report.

The HDI is a valuable tool for assessing the progress of countries towards achieving human development goals. It can also be used to compare the performance of different countries in terms of human development. However, the HDI has been criticized for its focus on income and for not taking into account other important aspects of human development, such as gender equality and environmental sustainability.

The correct answer to the question is: Health, education, and income.

Economic growth is not a direct measure of human development. It is possible for a country to have high economic growth but low human development, as in the case of some oil-rich countries. Education is important for human development because it enables people to develop their skills and knowledge, which can help them to improve their lives. Income is also important for human development because it provides people with the resources they need to meet their basic needs and to improve their quality of life.

Environmental sustainability is not a direct measure of human development. It is possible for a country to have high environmental sustainability but low human development, as in the case of some countries that have a strong focus on conservation. Infrastructure development is important for human development because it provides people with the basic services they need, such as roads, water, and electricity. However, infrastructure development is not a sufficient condition for human development. A country can have a high level of infrastructure development but low human development, as in the case of some countries that have a large gap between the rich and the poor.