Why are some countries with lower levels of GDP and standards of living able to catch up to the level of more developed countries?

Question Options:

a) Lesser developed countries tend to have larger populations so as the economy starts to grow them are more people they can put to work than more developed countries.

b) Lesser developed countries can adopt already invented technologies rapidly enabling their workforce to become more productive.

c) Workers in lesser developed countries work longer hours and thus produce more than workers in more developed countries.

d) Wages are really low in lesser developed countries so firms can hire more people and produce mor ethan firms in more developed places.

Lesser developed countries can adopt already invented technologies rapidly enabling their workforce to become more productive.

By and large, this selected option is really self explanatory.

Lesser developed countries already have the tools and resources needed to develop provided by developed countries. This in turn makes their growth faster ss in developed countries, the tools needed for development takes a long while to be achieved but what lesser developed countries needs to do is copy already proven methods.

can you explain a little further maybe give multiple choice? ?