What role does finding the old book play in the story’s educational structure?

Correct answer: It becomes the basis of comparison and curiosity

The governing narrative concept is the plot device that introduces contrast between two systems of education. Tommy’s discovery of the old printed book leads him and Margie to discuss schools from the past, where children learned together from human teachers. Thus option A is correct: the book becomes the basis for comparison and awakens Margie’s curiosity about a different educational world. Option B is false because the book does not damage or destroy the mechanical teacher. Option C is too specific and never follows from the discovery. Option D is also incorrect; Margie remains at home and only imagines the old school. The book therefore performs an important structural function: it moves the story from ordinary futuristic schooling into reflection on companionship, teaching, and learning.