Which effect of technology makes Margie think about old schools?

Correct answer: Feeling of studying alone

The correct answer is A because Margie studies alone at home with a mechanical teacher. Her lessons are delivered individually through a machine, so she does not experience the companionship, shared activities, and lively interaction of children learning together in a classroom. When Tommy tells her about old-style schools, she imagines pupils sitting together and being taught by a human teacher. Option B is the opposite of her situation, since she has no classmates nearby. Option C is incorrect because the machine cannot provide human affection, and option D describes a crowded school rather than her isolated home education. The question therefore tests how technology has reduced social contact in learning.