How does education’s definition become limited because of the machine teacher?

Correct answer: It shrinks to giving lessons and checking answers

The governing concept is the difference between education as a complete human experience and education as a technical process. The machine teacher can present information, ask questions, assign work, and check responses. If these functions define education completely, then learning is reduced to instruction and assessment. The story challenges that narrow definition by reminding readers of discussion, companionship, encouragement, imagination, and relationships in older schools. Therefore option B is correct. Option A concerns leisure rather than the machine’s educational function. Option C confuses the children’s discovery of the old book with the whole meaning of education. Option D is merely an event in the plot and has no connection with education’s definition.