Well, you didn't give us the answer choices, but I will tell you the three areas that the HDI (or the Human Development Index) covers.
1. A Long and Healthy Life – Measured by Life Expectancy
2. Access to Education – Measured by Expected Years of Schooling of Children at School-Entry Age and Mean Years of Schooling of the Adult Population
3. And a Decent Standard of Living – Measured by Gross National Income per Capita Adjusted for the Price Level of the Country.
- Hope this helps!