Which of the following is NOT a black belt rank title in Korean martial arts?

Promoter is not a black belt rank title in Korean martial arts, as it does not correspond to a formal ranking within the martial arts hierarchy. Black belt ranks typically have specific titles that reflect the level of expertise and experience of the practitioner.

Jo Kyo Nim generally refers to an instructor or teacher at the black belt level, Kyo Sa Nim translates to a certified instructor or master instructor, and Kyo Bum Nim implies an even higher rank within this structured system. Each of these titles conveys a certain level of authority and recognition in the martial arts community.

On the other hand, the title "Promoter" lacks the specific contextual meaning associated with rankings or levels of mastery in martial arts. It could imply someone who promotes martial arts in general, but it does not indicate the expertise or formal recognition associated with black belt titles. This distinction highlights why "Promoter" does not fit within the conventional structure of black belt rankings in Korean martial arts.