The position he wants to apply is very important for the development of the firm.
A. to which
B. for which
C. for that
D. with which
网友回答
A. to which
(答案→)B. for which
C. for that
D. with which
解析：考查定语从句，先行词是the position，定语从句中apply后面缺少for the position，所以是for which引导定语从句，句意是：他想申请的工作对公司的发展很重要。选B。