A. swim because B doesn't make sense, neither does D. It could be A or C, but I'd pick A. I did this test before and I picked A, and got 80 % so good luck ;)
The pardoner is the last pilgrim to be portrayed in the prologue. His estate belongs to the court of Rome. This gentle pardoner is thought to be worthy of respect; "He had a scholarly look" and "He was an honest person." Nevertheless, his pretension not to care for riches and his being "an unethical man" oppose the positive idea created. The inference that can be made from the excerpt is that he was an unethical man.
→It wouldn't be A (Queen-) because of the dash. →It wouldn't be B (There is no error in this sentence) because there's an error. →It wouldn't be D (Is:) because you only use ":" when you're giving multiple things together. →The answer is C (Queen;) because it's joining the sentences together. It's like having a comma in the sentence after "Queen."
