Pick out the most effective pair of words from the given pair of words make the sentences meaningfully complete.

Today we have achieved a milestone by completing 60 years of independence. Its now the time for everyone or every Indian to undergo_________of the achievements we already made and also those that are to be still_________

A. self-introspection-achiver

B. self-examination-achieve

C. introspection-achieved

D. search-found

Please do not use chat terms. Example: avoid using "grt" instead of "great".