Answer:
The answer is D. It expresses the speaker's discovery of joy in what he had thought was a dismal universe.
Explanation:
The speaker initially told us that the day was the shortest day of the year, the air was dead and the sky was gray. However, the symbolic description of music that is included afterwards changes the tone from one of complaint to one of joyousness. At the end of the poem, the poet's words become more positive.