同意D 对于C,Choosing manufacturing site locations that have access to optimal workforce populations 意思是choosing具有have access to optimal workforce populations的locations,而这个功能是qualitative factors的应用范畴,而非quantitative。 如果题目改成choosing from .... 那么就是在经过qualitative选择出来的这些locations之中在应用quantitative factors进一步选择。