Don't you think all four make sense? The essence of education is analyzed from different angles.

A. education and productivity complement each other.

B. Education increases people's knowledge level and affects people's ideology and morality, which is a superstructure.

C. The role of education is to better integrate into society, and schools are also called "embryonic" society.

D. education can be understood as guiding people to do things, to know things, and to integrate into social production and life.

Does this understanding make sense?

Everyone has a different interpretation of education. After understanding from many angles, we will find that the field of education is very broad, and even we can't limit education to a certain field.

So, I think we should choose all four.