Education in a broad sense refers to all activities that can enhance people's knowledge and skills and influence people's thinking. Education in a narrow sense refers to social activities with the direct goal of influencing people's physical and mental development, mainly referring to school education. It is an activity that educators exert influence on the body and mind of the educated through school education in a purposeful, planned and organized way according to certain social requirements, so as to promote their development in the expected direction. So choose C for this question.