Answer:
The reader can best interpret the theme of "The Yellow Wallpaper" as the subjugation of women at that time and the repercussions it can lead to.
Step-by-step explanation:
Depending on who the reader is and how s/he sees it, the interpretation of the story will all differ. But what is evident is the case of the subjugation of women and the eventual case of blurred perception of imaginary and reality. That's also the case with the narrator whose doctor husband locked her up in the nursery room due to her supposedly depression- a case that was perceived to be an illness. And this will eventually lead to her imagination of the woman behind the yellow wallpaper and in the end, identifies herself into that woman.