单选题 The main ______ of completing a postgraduate business qualification is that it allows you to make valuable contacts in related fields.

【正确答案】 C

【答案解析】that it allows you to make valuable contacts in related fields(帮助你在相关行业积累重要的人脉资源)属于有利因素，故选(C)advantage(优势，有利条件)。