Which element in "the yellow wallpaper" the reader better understand that the narrator is slowly losing her mind ?
a. her pleas to visit with friends
b. her attempts at hiding her writing
c. her obsession with the wallpaper
d. her requests to change bedrooms

The correct answer is:

C. Her obsession with the wallpaper

The idea is that the reader catches a persepctive that the narrator is slowly sinking into madness.  Is there really a woman creeping around outside in the bushes? Probably not. Is there really a woman trapped in the wallpaper? Definitely not. But is the pattern of the wallpaper interesting and confusing? Probably yes.

answer: inference

explanation:

an inference can be understood as a conclusion to which a person is able to get based on reasoning. it is the same as a deduction, a guess, an assumption.   in the sentence presented, the conjunction "but" gives the readers an idea of contrast, and, therefore, allows them to induce that despite the opponent's characteristics, andrea had something different that made her win.