单项选择题

Today there are about 7,000,000 Americans in colleges and universities. In the United States nearly half of the population(人口)are young persons under twenty-five. Many of them will soon be in charge of(管理)the country. So their ideas are important to everyone in the country, and it is necessary for older people to understand what young people think and feel.
College students today have strong opinions(观点)about right and wrong. They are interested in making a better life. They see much that is wrong in the lives of their parents. It is hard for them to see what is right and good in the older ways. Because of(因为) this, there is often trouble in American families.
Why are young persons’ ideas is important Because ______.

A.they are college students
B.they have strong opinions about right and wrong
C.many of them will soon be in charge of the country