Here's a few sentences with 'a'.
Billy helped a girl find her lost cat.
Georgia found a stray cat in an alley.
Remi got a suitcase for her birthday.
This is an interrogative sentence. The word "interrogate" means to ask a question.
The correct answer is C. Miller. This is because all of the other characters fit other classes with their looks, behavior, and stories. The miller however is just a simple worker. The miller's story however fits his social status, and is a comical tale full of inappropriate behavior.
Change in the medium allows the audience to use knowledge they already have to interpret the new form of the artwork.