The united nations calculates a country’s level of development using a scale called the human development index (hdi). the factors in the u. n. calculation include per capita gdp, as well as life expectancy, adult literacy rate, and school enrollment rate. two countries shown in the chart ranked higher in overall development than the united states did. the united states had a higher per capita gdp than these countries. what factors accounted for the higher rankings of these countries? question 9 options: iceland had the highest rankings in all factors except per capita gdp. both countries had higher life expectancy; iceland had higher school enrollment. per capita gdp is a less accurate measure of development than gdp. japan's life expectancy and school enrollment were the highest listed.