Why does Margie's attraction toward old schools increase the importance of human teachers?

Correct answer: Because teachers and students learned together

Margie is attracted to the old school because it represents a shared human learning experience. Children attended together, interacted with one another and received instruction from a person rather than studying alone with a machine. This contrast makes the human teacher important not simply as a source of facts, but as the centre of discussion, cooperation and common experience. Thus option A is correct. Option B is false because old schools certainly involved lessons. Option C reverses the contrast, since the future setting is more mechanical. Option D is not supported by the story and is unrelated to the essential value of a teacher. The attraction comes from companionship and shared learning.