In the story, the effect of telebooks is not only a reading tool but also a sign of what?

Correct answer: Technological change in medium and habit of education

The governing concept is technological change in the form and habits of education. A telebook is not an ordinary printed volume; it is a screen-based device through which material can be read and accessed electronically. Margie and Tommy’s surprise at the old book shows that their generation has grown accustomed to digital reading and no longer treats printed books or traditional schools as normal. Hence option A is correct: the telebook symbolises a broader change in educational media and everyday learning habits. Option B is unrelated because the device is used for reading, not games. Option C reverses the story’s contrast, and option D is false because the future system relies on mechanical teachers rather than increasing human teachers. The object therefore represents cultural as well as practical technological transformation.