The correct answers are educated citizens, access to health care an higher incomes.
An advanced economy is a post-industrial economy (in contrast to agrarian developing countries) that has an advanced technological infrastructure, a relatively high GDP ( gross domestic product, meaning everything a country produces) per capita and also fares strongly on the HDI (Human Development Index).
The World Bank classified developed economies as "high-income economies" according to their GNI (Gross national income) per capita.
The UN uses the HDI, claiming it takes into account how income is turned into education and health opportunities.
