C) The bells change from controlled to panicked
Gregor hates his job for numerous reasons: he dislikes traveling every day to work, he dislikes the job itself, the inferior meals, the ever changing faces... But he has to continue working because his parents owe Gregor's boss money.
hope this helps....
I would say D. Because authors always try and make their characters have a strong and unique voice to make their writing piece more comforting or relatable