Step-by-step explanation:
A) The speaker's series of exclamations in lines 31-33 ("Sweet Pan") interrupt the pace of the narrative in order to dramatize the overwhelming beauty that is revealed as Pan begins to play. The speaker's exclamations suggest that he or she is overcome by the beauty of the music and is unable to contain his or her emotions. The interruptions emphasize the transformative power of Pan's music and its ability to transport the listener to a higher realm of experience.