The correct answer is A. How long people live.
Explanation
Gross domestic product (GDP) is an economic indicator based on the final value of all the items produced during a year in a country or zone. The Gross Domestic Product per capita is the same indicator, divided by the amount of population of a country to know the level of welfare offered by that country, also it serves as a comparison between countries to categorize them. On the other hand, the Human Development Index (HDI) is an indicator that expresses the level of development of each country using variables such as life expectancy, education or per capita income. This means, both the GDP and the HDI measure the economy and development of a country, but in the case of the GDP this does not consider the life expectancy or how people live; also, it does not consider education and related elements to the population.
