If you were performing introductions among the following people, whom would you mention first? president of a company a client manager outside consultant

It is a common notion that when we introduce someone, we always put the one with the highest position, the one who has achieved more and impacted the lives of most of the people around, and the most well-known to be the first one in the list. In this case, basing on the given options above, the one that should be mentioned first is the President of a Company.