Why does the imagination of old school create an unusual effect for the reader?

Correct answer: The reader sees a familiar thing through an unfamiliar future view

The governing technique is reversal of perspective, supported by contrast between the reader’s present and Margie’s future. A school building, a human teacher, and children learning together are familiar to a modern reader, but they seem strange and almost unbelievable to Margie, who studies alone with a mechanical teacher in her home. This reversal makes an ordinary institution appear unusual and helps the reader question whether technological convenience is equal to educational quality. Option A is correct because it identifies the unfamiliar future viewpoint. B is only a detail of Margie’s world, while C and D are unrelated to the unusual effect created by the story.