Definition: In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
Input: Article: For an increasing number of students at American universities , Old is suddenly in . The reason in clear : the aging of prefix = st1 /Americameans jobs . Besides the aging of the body--boom   population , a longer life means that the nation's elderly population is certain to grow greatly over the next 50 years . By 2050, 25 percent of all Americans will be older than 65 , up from 14 percent in 1995. The change causes some questions for government and society , of course . But it also creates jobs in medicine and health fields , and in law and business as well. "Besides the doctors , we're going to need more sociologists , biologists , city planners and lawyers," says Professor Edward Schneider of the University of Southern California's (USC) School of Gerontology  .  Lawyers can major in "elder law" , which covers everything including nursing-home abuse   and age discrimination . Businessmen see huge opportunities in the elder market because the baby boomers , 74 million strong , are likely to be the wealthiest group of retires in human history. "Any student who combines an expert knowledge in gerontology with , say , an MBA or law degree will have a license to print money," one professor says . Margarite Santosis a 21-year-old senior at USC. She began college as a biology major but found she was "really bored with biology". So the took a class in gerontology and discovered that she liked it . She says, "I did volunteer work in retirement homes and in was very satisfying." 
 Answer: gerontorogy has suddenly become popular
