根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。
Empathy
Last year, researchers from the University of Michigan reported that empathy, the ability to understand other people, among college students had dropped sharply over the past 10 years. __71__ Today, people spend more time alone and are less likely to join groups and clubs.
Jennifer Freed, a co-director of a teen program, has another explanation. Turn on the TV, and you’re showered with news and reality shows full of people fighting, competing, and generally treating one another with no respect. __72__
There are good reasons not to follow those bad examples. Humans are socially related by nature. __73__
