What does Tommy's greater knowledge of old schools suggest about the effects of technological change?

Correct answer: When technology changes, knowledge of earlier ways of life can differ from person to person

Tommy knows about old schools from the book he found and from what he has learned, while Margie initially finds the idea unfamiliar. This suggests that knowledge of earlier ways of learning can differ between individuals as technology and education change. It does not prove that Tommy will become a teacher or that only boys attended old schools. Therefore, option A is the best answer.