【正确答案】 D

【答案解析】本题是细节识别题，我们可以从原文找到对应，只是考查学生的眼力：Lastly，seeing ourselves in better health is advantageous socially．The sense of satisfaction thus obtained will result in an increase of self-respect and self-confidence in terms of our ability to interact with others．在社交方面得到的益处使我们在与他人交往时变得更加自信、自重。