Men are more suited to occupational environments ______require decisive action while women are better at jobs ______ a considered approach is most important.

A.which; that

B.不填; when

C.which; when

D.that; where

答案及解析： D

解析：

考查定语从句。第一个定从的先行词是occupational environments，在定从中作主语，关系代词可以是which或that；

第二个定从先行词是jobs，在定从中作地点状语，用where。所以选D。