The components of Human development index are as follows:

Real per capita GDP : It is the total economic ouput of an economy measured for per person and adjusted for inflation.

Level of Education: This is basically what the expected and actual years of schooling are in an economy.

Life Expectancy: It is basically a measure of how long an individual is expected to live i.e measured in terms of how many years.

The other given options are not measures of Human Development Index.

Human Development Index is basically a measure to understand human development with the help of education, health quality and standard of living. It is an estimate of the economic and social well being of an individual. It is released every year by the United Nations Development Program (UNDP).