The basic elements of education mainly include educators, educatees and educational influences, and educational influences include educational contents and educational measures. The so-called educational influence refers to all the information of the interaction between educators and learners in educational activities. Item A "educational media", item B "educational content" and item D "process and activity" all belong to the content influenced by education, so these three options can be excluded. The most basic elements of the education system are educators and educatees, namely teachers and students.