What can be the biggest advantage of future education in the story?

Correct answer: Lesson adjustment for each student

The mechanical teacher can be programmed to give lessons suited to an individual learner’s needs, level and pace. This is a major possible advantage of future education: instruction can be adjusted when a child finds a subject difficult or progresses more quickly than others. Option A is therefore correct because it describes personalised learning. Option B is not an educational advantage and is unrelated to the machine’s function. Option C contradicts the story’s paperless, screen-based setting, while D is presented as a missing benefit of old schools rather than a strength of Margie’s future system.