What risk is created by privatization of education due to technology?

Correct answer: Reduction of children's social learning

The governing concept is the social cost of individually delivered education. In the story, Margie studies alone in a room at home with a mechanical teacher, rather than meeting classmates in a common school. Although this arrangement offers convenience, regularity, and lessons adjusted to her level, it removes everyday opportunities to cooperate, compare ideas, communicate, and form friendships. Therefore option A is correct: excessive educational privatisation can reduce social learning. Option B is a benefit of the machine, not a risk. Option C also describes an advantage because the lesson can be set to the learner’s level. Option D is merely a physical detail and has no educational argument. The question requires attention to what is lost when education becomes isolated, not only to what technology makes efficient.