The old school building symbolizes which educational idea in the story?

Correct answer: A shared space for collective learning

The governing concept is the school as a social space rather than merely a place where information is transmitted. In Margie's imagination, the old school building brings many children and a human teacher together in one physical classroom. It therefore symbolizes collective learning, face-to-face interaction, shared routines, and a sense of belonging. Option A is correct. The building is not described as a storehouse of machines, so B reverses its meaning. C wrongly turns a public educational institution into household decoration, and D names a technical error rather than an educational idea. The symbol supports the story's contrast between communal schools and isolated home instruction.