Answer:
B. It emphasizes his devotion to his music
Step-by-step explanation:
The narrator's description of the neighbour advances the plot of the poem by emphasizing his devotion to his music.
The narrator reveals that the neighbour plays his music both in the night and in the day time. The narrator states, ''The neighbour sits in his window and plays the flute, From my bed I can hear him," (Lines 1-2). Also, the narrator reveals that "In the daytime, The neighbour eats bread and onions with one hand and copies music with the other" (Lines 9-11). These statements by the narrator depicts and emphasizes that the neighbour was devoted to his music that even when he is eating, he is writing music.