The question is asking to state why G.K. Chesterton think and believe that Saint Thomas Aquinas viewed man as a whole rather than as a beast, base on my research, its because that he believe that a man had to believe on something that no normal man would believe. I hope this would help
Answer: A good summary would include the most important parts of the passage
I think it's A. The dash can be used in both places
B: Irony
Theme is something the author is trying to teach the reader.