The aspect of classical conditioning that illustrated on this scenario is: Generalization
Classical conditioning defines generalization as a response that we give to a certain stimulus after we determine an appropriate response for that certain stimulus. This phenomenon make mary generalize her past experience to all dogs.
It depends on if you think it matters. Prestige helps because prestigious schools tend to be very good. It also looks really good on your resume. However, some schools aren't very prestigious and are very good. Like I said, it really depends on if you care about it or not.
C. Ashamed is the correct answer