Option C is right. He is using parallel structure : "....international generosity, ...return of true independence.., world disarmament.. freedom of religion..., good business..". Roosevelt draws attention to the reasons he is concerned about dictators who have taken power in parts of Europe.
A) overly self-confidence in his skills
If your looking for an antonym: dismayed
I believe the answer is C) The writer showing the motivation of the characters through dialouge
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The author is showing Pat's expressions and feelings and Terrence's expressions and feelings based on what they say and do.
Good luck,
