From which one-sided form of education does the importance of human teachers save learning in the story?

From a lifeless process of delivering information

The governing idea is that education should develop understanding, judgment, curiosity, and human connection, not merely transfer facts. A mechanical teacher can display information and set tests, but it cannot naturally notice a learner’s mood, invite a revealing question, alter an explanation, or create a warm exchange among students. A human teacher rescues learning from becoming a lifeless process of delivering information by interpreting responses and connecting the lesson with children’s experiences. Therefore option D is correct. Options A, B, and C describe valuable parts of education, but they are not the one-sided form from which the teacher saves learning; classroom dialogue, peer cooperation, and experience are positive alternatives to mechanical isolation.

This is a Class 9 English question. Chapter: The Fun They Had. Topic: the importance of human teachers.