Please direct my inquiry（ ）whoev

Please direct my inquiry（ ）whoever is in charge of quality control.
A、with
B、for
C、to
D、on
【正确答案】：C
【题目解析】：介词的特殊用法。direct to：把（注意力、精力）贯注在...上 ，whoever is in charge of quality control整体做介词to的宾语。