【正确答案】 D

【答案解析】[解析]根据文章以下哪一个是正确的：选项A：从文章第四段第二行可知：the amout of time available to make a decision for a given problem is often determined by the environment，not the managemunt．故选项A错误。选项B：从文章第四段第三行可知：The risk related to a particular course of action may be lessened by use of a group rather than an individual decision-maker．故选项B错误。选项C：做决定的过程不考虑时间因素。文章提到时间是3个因素之一，故选项C错误。故应选 D。