What change came in the teacher-student relationship because of technology?

The teacher became a machine giving instructions

The governing concept is the replacement of personal educational contact with programmed instruction. In Margie’s world, the teacher is a mechanical device installed in the home. It delivers lessons, asks questions, and evaluates answers through its programmed system, but it cannot provide the warmth, flexibility, encouragement, or natural conversation of a human teacher. Option D is correct because technology changes the teacher-student relationship into an interaction between a child and a machine that gives instructions. The relationship does not become more human, classmates do not become teachers, and human teachers do not visit every home. The change reveals both technological convenience and emotional distance.

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