Table 6 shows Canada’s Human Development Index (HDI) value over the period 2016 to 2020.
| Year | 2016 | 2017 | 2018 | 2019 | 2020 |
|---|---|---|---|---|---|
| Canada HDI Value | 0.921 | 0.923 | 0.925 | 0.927 | 0.929 |
All other things being equal, which one of the following is most likely to explain the trend shown in Table 6?
A reduction in carbon dioxide emissions per capita
A decrease in the Gini coefficient
An increase in the expected years of schooling
A depreciation of the Canadian dollar exchange rate
