While it's difficult to definitively state which type of country would have the "best" educational system, generally speaking, a country that is stable and has a strong governance framework tends to provide better educational outcomes. Therefore, the option that is most likely to have the best educational system would be:
C. a country that has few natural resources and a stable government.
A stable government typically facilitates investment in education, promotes policies that prioritize educational development, and ensures that educational institutions are effectively managed and funded. While natural resources can provide economic benefits, they do not automatically equate to a superior educational system, especially if governance is unstable.