Choose the closest paraphrased version after the following sentence or the italicized part.
What impelled the boy to take so much trouble to spare the feelings of a stranger（ ）
A、
Why did the boy trouble himself to save stranger
B、
Why did the boy try so hard to make friends with a stranger
C、
Why did the boy try his best to build up the confidence of a stranger
D、
Why did the boy make such great efforts in order not to embarrass a stranger
【正确答案】：D
【题目解析】：
句子释义：是什么促使这个年轻人不厌其烦地解除一个陌生人感到自己无用而难堪的情绪？
D选项“为什么这个年轻人如此努力地不让一个陌生人难堪”符合题意。