问题详情

Which of the following is the most challenging for the work of counseling services？
A．More and more college students suffer from mental-health problems.
B．Though many students have mental-health problem, few of them seek counseling.
C．They have to keep an eye out for students who might pose a risk to others.
D．Persuade people into believing what"s made into the media isn"t very popular.请帮忙给出正确答案和分析，谢谢！