Answer:
D. The learning of academic facts and concepts.
Explanation:
Education is important for humans to gather knowledge about the world and progressively contributing to society and for this purpose education is formalized. The systemic educational system with predetermined objectives about the behavior of learner is called formal education. The structured hierarchical system from primary to university level is used in a formal education system. However, it should be noted here that there are other ways of education such as informal and non-formal learning.