题目内容

（2020年考研311单选题2）联合国教科文组织为了便于统计和比较各国教育事业的发展状况对“教育”及其相关变量进行了操作性界定。根据谢弗勒有关教育定义的分类，这种界定属于

A. 描述性定义
B. 纲领性定义
C. 功能性定义
D. 规定性定义

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