OE
The blank should be a positive word to accompany “alluring.” What’s more, it should be something that contrasts the “simple and quaint” nature of rural America. Given this, you need a positive word for something not simple. “Lascivious” means overtly and often inappropriately sexual; this doesn’t fit the sentence. “Foreign” may appear to go along with “expatriate;” it’s easy to fall into such a theme trap if you are not in the habit of pointing to explicit clues in the sentence (“simple and quaint,” in this case). “Alien” is similar in meaning to “foreign” and is also a slightly negative word. Likewise, “alienating” is not a positive word—in this case, it would lead to an impression that the young lad felt unwelcome in Paris. “Sophisticated,” with its sense of polished culture, offers the best contrast to “simple and quaint.”
Answer: B