Answer:
C. Guitar distortion and feedback
Step-by-step explanation:
Green River was the grunge rock band that was active during the 80s, becoming famous in their hometown Seattle. While they didn’t have much success around the states, they are considered to be one of the pioneers of grunge music, the genre that emerged at the time from Seattle. Two of their member later joined the worldwide famous band, Pearl Jam.
Green River was heavily using distortion in their music. Because of this, they described their sound as “dirty” sometimes, meaning it had noises and distortion often used. With the usage of the distortions came also feedback, the amplified sound that would come back to the signal of the instrument in a loop.