Respuesta :
The answer is B)she becomes obsessed with finding a pattern in the wallpapers design.
The reader got to know that the narrator's mental state has begun to deteriorate as, She becomes obsessed with finding a pattern in the wallpapers design.
What is deteriorate?
Deteriorate means to break down or to degrade.
Because the narrator begins to notice patterns in the wall paper and transforms those patterns into obsession, which began to deteriorate narrator's mental state, and results in psychological collapse.
Hence the correct option is, B. She becomes obsessed with finding a pattern in the wallpapers design.
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