What complex problem does personalization create in Margie's education?

Correct answer: It gives an individual level but reduces social learning

Option B is correct because personalised instruction has both a benefit and a limitation in the story. The mechanical teacher can be adjusted to Margie's level and can present lessons suited to her performance, which is an advantage of individual pacing. At the same time, Margie studies alone in her home and has no classmates with whom she can discuss ideas, cooperate, compete, or develop social understanding. Thus personalisation improves individual fit but may reduce the social dimension of education. Option A is false because the system does not stop teaching. Option C reverses the situation, since Margie does not attend an old school. Option D is also false because the machine remains mechanical. The key concept is the tension between customised instruction and collective learning.