Why does education at Margie's home still seem incomplete?

Correct answer: Because it lacks the human warmth of teachers and classmates

The governing concept is the difference between formal instruction and complete education. Margie does receive lessons at home, so education is not absent. However, her mechanical teacher gives fixed lessons in isolation, checks her work mechanically, and does not provide friendship, conversation, or emotional encouragement. The old book causes her to imagine a classroom in which children learned together and a human teacher guided them. Thus her education seems incomplete because it lacks the warmth and social interaction that make learning meaningful. Option A is correct. Option B is unsupported, since the story does not say that the house lacks a room. C is false because Margie can read, and D is false because Tommy actually introduces her to the old book.