The answer is C. In media's res
The correct answer is the first one.
He describes Mrs. Miller's behavior as "unprecedented." By this, he is saying that, of all the parents he has ever known, her behavior is unusual, singular, or unique.
Quite simply, it is strange that she would allow her daughter to run around town with a strange man. Mrs. Miller's behavior is more than silly -- it is downright unheard of.
In stave one, Ebenezer Scrooge is depicted as an extremely cold, callous businessman who is insensitive, cold-hearted, and miserly
Sherburn describes humanity as being cowardly because of the bob-mentality he has.
hope this helps