The process of growing up is plex for every person, there are many influential factors in a person's growth as well as the development of his personality.
A. but
B. so
C. for
D. therefore
网友回答
A. but
B. so
(答案→)C. for
D. therefore
解析：C 句意：每个人的成长过程都是复杂的，因为影响一个人成长和个性发展的因素有很多。for“因为”，符合题意。