I think that the answer is C.
The answer is minimalist music.
Minimalist music is based in frequent repetition which have small variations of a small musical idea.
Usually, it is a slowly changing common chords and common tones.
Not necessarily. it's considered <span>audacious, yes. not so nice to listen to. it had a purpose and was effective in fulfilling that purpose; it was definitely influential.
but nonetheless, from an aesthetic standpoint you could definitely argue that it's defective.</span>
