How can a human teacher handle a student's curiosity better than a mechanical teacher?

By discussing and expanding questions

The governing concept is dialogic learning, in which questions become opportunities for deeper understanding. A student’s curiosity may lead beyond the exact point programmed into a mechanical lesson. A human teacher can listen carefully, ask follow-up questions, connect the doubt with earlier knowledge, give examples and invite discussion with classmates. This process develops reasoning instead of merely displaying a predetermined answer. Shutting down questions, isolating the learner or showing only the final answer suppresses curiosity and prevents exploration. Option B is correct because discussion and extension help the learner investigate why an answer works and how the idea relates to other concepts. That responsive conversation is an important advantage of human teaching in the story.

This is a Class 9 English question. Chapter: The Fun They Had. Topic: the importance of human teachers.