Correct Answer: (c) C, E, A, D, B
Solution:The UN Secretaries- General in Chronological order:
(C) U Thant :- From Myanmar, served from 1961 to 1971
(E) Kurt Waldheim:- From Austria, served from 1972 to 1981
(A) Boutros Boutro-Ghali:- From Egypt, served from 1992 to 1996.
(D) Kofi A. Annan:- From Ghana, served from 1997 to 2006.
(B) Ban Ki - Moon:- From South Korea, served from 2007 to 2016.