参考答案：A

解析：[分析] 推断题型。 见第三段第二、三、四句：Teachers from kindergarten on are specifically designated agents of socialization. Ideally，a teacher is one who has both knowledge and the skills．to present it. During the course of teaching their subjects，classroom instructors provide role models and attempt to convey the excitement of learning itself．其中划线部分与选项C相符：specifically designated…(特别地选派出的……)可推论出既是委派，则应带薪的。可排除B和D，因此答案为A。