What title is given to a first Dan black belt in Korean martial arts?

The title given to a first Dan black belt in Korean martial arts is "Kyo Sa Nim." This title translates to "Instructor" and is used to denote a rank of knowledge and teaching ability. In the hierarchy of martial arts, achieving a Dan rank indicates not just proficiency in technique but also an understanding of martial arts philosophy, tradition, and the ability to pass that knowledge on to others.

Kyo Sa Nim is specifically associated with those who have reached the first or second Dan levels, emphasizing their role as instructors. This is an important aspect in training, as black belts are expected to not only practice their skills but also help others achieve their own goals in martial arts.

The other options refer to different levels or roles within the martial arts ranking system. For instance, "Sabum-Nim" refers to a master instructor (usually at the 4th Dan or higher), while "Jo Kyo Nim" is typically used for an assistant instructor. "Kyo Bum Nim" does not correspond to a standard title within the traditional ranking system and could be a misunderstanding or misspelling of recognized terms. Thus, the correct understanding of Kyo Sa Nim solidifies its importance in the structure of martial arts instruction.