Q.4:- What is the main criterion used by the World Bank in classifying different countries? What are the limitations of this criterion, if any?

Answer:-

The criterion used is per capita income. 

Limitations

(a) It covers only the economic aspect ignoring factors like infant mortality rate, literacy rate, no attendance ratio for class I-V, etc which are important indicators for development.

(b) This method also does not provide us the distribution different levels of income.