Why does Margie's mother accept technology?

Because the machine can teach regularly and according to level

The governing concept is the practical usefulness of technology in individualized education. Margie’s mother accepts the mechanical teacher because it provides regular instruction at home and can be adjusted to the child’s level. When the machine has difficulty, she seeks technical repair rather than questioning the entire system, showing her faith in its convenience and educational function. Option A is correct because it combines the two relevant reasons: dependable teaching and adaptation to the learner. The machine does not create classmates, reopen old schools, or write paper books. Those choices either confuse the system with traditional schooling or mention functions not described in the story. Her view emphasizes efficiency, even though Margie feels lonely.

This is a Class 9 English question. Chapter: The Fun They Had. Topic: impact of technology.