Why was the County Inspector called to the house?

Correct answer: There was a technical problem in Margie's study

The correct answer is A: the County Inspector was called because Margie’s mechanical teacher had developed a technical problem. Its Geography sector had been adjusted incorrectly and was giving Margie tests that were far too difficult, so her mother summoned an expert to inspect the machine. The Inspector repaired the problem by taking out the Geography sector and resetting it to an average ten-year-old level. Option B is unrelated to the visit. Option C concerns the old printed book, which the Inspector did not come to produce, and option D is impossible because Margie studied at home. The incident shows both the usefulness and the limitations of machine-based education.