Who taught children in the old school?

Correct answer: Human teacher

The governing concept is the contrast between traditional schooling and the individualized mechanical education of Margie’s time. In the old school described by Tommy, children went to a common school building and were taught by human teachers. These teachers could explain ideas, respond to students, supervise a group, and participate in a shared social learning environment. Therefore option B, “Human teacher,” is correct. A mechanical teacher belongs to the future system in which Margie studies at home. A telebook is a reading device or source, not a person who teaches, and the County Inspector only repairs mechanical teachers. The contrast helps explain why Margie begins to imagine old schooling as more enjoyable.