Answer:
No, quaint means attractively unusual or old-fashioned. Bus terminals are typically pretty busy so that's nothing unusual. I would assume a very busy bus terminal wouldn't be old-fashioned either, it would probably be pretty new.
Explanation:
A widely accepted way of thinking or behaving is a convention.
It denotes set of generally accepted standards and norms and a way in which something is usually done. Example for convention is shaking hands when greeting someone. Controversial on the other hand is something causing people to have opposing ways.
It would really depend on what line 39 is but if I had to guess I would guess A. To remain in one place