The correct answer is: D) All of the above.
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 if it performs better on these indicators.
Life expectancy is a measure of the average number of years that a person is expected to live. It is calculated by taking the number of deaths in a given year and dividing it by the population.
Education is a measure of the level of education that a country’s population has attained. It is calculated by taking the number of people who have completed primary school, secondary school, and tertiary education.
Income is a measure of the amount of money that a country’s people earn. It is calculated by taking the total amount of money that is earned in a country and dividing it by the population.
The HDI is a useful tool for measuring the level of development of a country. It is important to note that the HDI does not measure all aspects of human development, such as happiness or environmental sustainability. However, it is a good starting point for understanding the level of development of a country.