What does Margie's passivity before the mechanical teacher prove?

Correct answer: Learning without human dialogue can become one-sided

The governing concept is the difference between one-way instruction and interactive learning. Margie mainly receives programmed material, answers the machine's questions, and follows its routine. There is little opportunity for a natural exchange in which she can negotiate meaning, challenge an idea, or receive encouragement from another person. Her passivity therefore suggests that learning without human dialogue can become one-sided. Option B is correct. Option A is unsupported because a machine is not automatically a friend. Option C is absurd because language remains essential for understanding, and option D contradicts the description of old schools. The point is not that machines can never help, but that they cannot alone provide the full social and responsive experience of education.