How did the presence of classmates change education in old schools?

Correct answer: It made it social and enjoyable

The correct answer is D. In the old schools described by Tommy, children learned together in a common building rather than separately at home. The presence of classmates made education a social experience: pupils could talk, compare ideas, help one another and share the excitement of lessons and school activities. This companionship is especially important because Margie's machine gives her instruction but leaves her alone. Classmates did not merely make learning faster, nor did they remove the teacher; instead, they added cooperation, communication and enjoyment to formal education. Option B is the opposite of the story's point, while A and C confuse social learning with speed or the absence of teachers. The governing concept is collaborative and social learning.