Answer: C) if we have free time in the afternoon.
I don’t really think so, as an oxymoron is two contradictory words put together. Eg The living death, a small crowd or bittersweet.
Plain and Surprise are not necessarily contradictory.
The answer to this blank is "are stolen'' because there are a lot of things which are stolen
the contented... oof. "contented" probably means "satisfied" in this context.