Which statement best describes folk music? a) harmonies depend on the arranger's decisions. b) the performer follows the composer's directors. c) the performer's interpretation is most important. d) the performance depends on the rules for the genre.

C

In folk music, the performer’s interpretation is most important for it has a traditional perspective and often-related to national culture. The traditions, customs and superstitions of older and ordinary people are expressed in folk music. Therefore, the performer must be familiar with the origin of the music so that it can be deliver or performed well with dignity.  

Iwould go with write exactly two extra paragraphs to point out additional information. but the keyword "exactly" throws me off. leads me to believe it's d. go with your gut feeling. either "write exactly two extra paragraphs" or "none of these".