The correct answer is A. An unnamed character
Step-by-step explanation:
"The Yellow Wallpaper" is a literary work written by Charlotte Perkins Gillman that tells the story of an unnamed woman who has been diagnosed with a temporary nervous depression and because of this is taken by her husband who is a physician to a mansion for the summer. This story is mainly told from the perspective of the woman who is being treated for nervous depression and whose name is not explicitly revealed; additionally, the story is told by the woman as she writes in a secret diary her experiences while being in the mansion. Therefore, the narrator of "The Yellow Wallpaper" is mainly an unnamed character as this is a female character that seems to be suffering from mental illness but her name never revels.