Which of the following pairs of indicators is currently used to measure the education (knowledge) dimension of the Human Development Index (HDI)?
Adult literacy rate and the combined primary, secondary, and tertiary gross enrolment ratio
Public spending on education as a percentage of GDP, and the primary school completion rate
Mean years of schooling for adults aged 25 and over, and expected years of schooling for children of school-entering age
Mean years of schooling for adults aged 15 and over, and the youth literacy rate
