How does technology make education personalized while also standardized in the story?

Correct answer: The machine adjusts level but runs a controlled curriculum

The governing concept is the tension between personalization and standardization. The mechanical teacher can be adjusted to suit a child’s progress, as shown when Margie’s geography lessons are set at a level appropriate to her performance. This makes instruction appear individualized. At the same time, the machine follows a fixed programmed system, controls the sequence and method of lessons, and offers no genuine classroom community or flexible human judgment. Option A is correct because it includes both features: adaptation of level and control by a standardized curriculum. Option B is false because subjects are taught. Option C ignores the academic purpose of the machine, and option D confuses future mechanical instruction with the old school described in the book.