In the story, technology had made children accustomed to what?

Correct answer: Screens and machines

Technology had made the children of the future accustomed to telebooks, screens, and mechanical teachers. They studied individually at home and interacted with machines instead of attending a shared classroom with a human teacher. Therefore, option C is the best answer. Paper books and old school buildings belonged to an earlier educational system and seemed unfamiliar to Margie and Tommy. Human teachers were not part of their ordinary experience because lessons were delivered by machines. The governing idea is that repeated dependence on technology changes what children consider normal. The story does not claim that every technological device is harmful; rather, it shows both convenience and the possible loss of companionship, discussion, and emotional connection in learning.