I think the answer will help is b
the longest one in history
The correct answer is letter B
In the social sciences, however, modernization is an extremely complex and comprehensive concept, because it encompasses a huge set of transformations taking place in the economic, social and political structure of a nation. The modernization process can occur concurrently or separately in each of the constitutive structures of the social system. Modernization is a continuous process, which even today produces transformations in contemporary societies.
There are many countries that participate.
It's a lot to list so if you go to Maps of World 2016 Summer Olympics Participating Countries, you can see all recent countries that participated. This way you can also give credit to that site.
