Which option shows a balanced view of technology in the story?

Correct answer: Technology is useful but is not a complete substitute for human education

The governing idea is that technology can make learning efficient, but education is broader than the delivery and checking of information. In the story, Margie’s mechanical teacher gives lessons, sets the pace, and evaluates answers, so technology clearly has practical usefulness. However, Margie studies alone and misses the companionship, discussion, emotional understanding, and shared experiences associated with old schools and human teachers. Therefore, option D is correct because it recognises both the benefit and the limitation. Options A and B are extreme claims: technology is neither wholly harmful nor perfectly complete. Option C is factually wrong because the machine is directly used for education.