Which one of the reason is most important in helping students to study in colleges and universities?

A. Having access to the university tutors who can provide individual instruction for the students who have difficulty in study.

B. Having the help and encouragement from the family and friends.

C. Having excellent teachers in high-school who can help the students before the university.

来源:可可英语 http://www.kekenet.com/toefl/201804/543660.shtml