What element in the room does the narrator of "The Yellow Wallpaper" focus on through much of the story?

The woman in the yellow wallpaper.

Explanation:

The whole story is about how she obsessed over the yellow wallpaper and the woman she thought was inside it. Her husband even moved them out of the nursery room because he feared she was going too far. It got to the point that it was all she thought about.

since it is asking for her reaction to elnora's trouble at school you can rule out any answers with a positive response (b). then you can rule out (d), this is because it does not show the mother's reaction but the daughter's response. that leaves you with two options (a) and (c), by looking at the options you can rule out (c) because it isn't referring back to elnora's issues at school.