Which excerpt from billy collins’s “man listening to disc” best reflects the euphoric effect the narrator experiences from listening to music on his headphones?
a. his music flowing through the soft calipers
b. the pavement sparkling with sunlight
c. the music is loud yet so confidential
d. all i can say is watch your step

The answer is pavement sparkling with sunlight. These lines are all about setting of the pavement that the speaker walking sideways is all shiny an pretty with sunlight. There are many other lines of equal simplicity which permit the reader to ease over and done with parts of the poem just as the speaker with his earphones on flow along with the others on the pavement.