题目解析:
题干提问“Malinowski 版和 Radcliffe-Brown 版的功能主义的共同缺点是什么”。
定位第6段第6句 And even if we are able to assess whether a particular custom is functional, this theoretical orientation fails to deal with the question of why a particular society chooses to meet its structural needs in a particular way.
即理论观点无法解释为什么一个特定的社会选择以特定的方式来满足其结构需求。
故选 D。