What is the irony in the title connected with?

Correct answer: Future children imagine the fun of old schools

The governing literary concept is irony: the title sounds as if old schooling was an ordinary, remembered pleasure, although the children of the future initially think that learning in a school building with human classmates would be strange. Margie gradually imagines the fun of meeting other children, learning together and having a human teacher. Therefore option A is correct. The irony comes from the future children looking back at a form of education that their society has abandoned and finding it attractive. Option B is factually unrelated, option C is false because the machines did teach, and option D does not explain the title.