Final answer:
Keats does not literally hear the music in stanza 2 of 'Ode on a Grecian Urn'; instead, he appreciates the beauty of the melodies through the imagination, which he implies are even sweeter than those heard.
Step-by-step explanation:
The student's question relates to whether Keats can hear the music in stanza 2 of Ode on a Grecian Urn. In the lines: 'Heard melodies are sweet, but those unheard Are sweeter; therefore, ye soft pipes, play on;'
Keats suggests that the melodies played by the soft pipes are not heard with the physical ear but are appreciated by the spirit or imagination as being sweeter. Given this interpretation, the answer to the question is B. No, Keats does not hear the music in the literal sense, but he acknowledges the beauty of the music that is imagined and therefore 'unheard'.