The statement that is a theme of "The Yellow Wallpaper" is "People need to be mentally active and engaged to keep their sanity," option D, as explained below.
We can define theme, in literature, as the idea or message that pervades a literary work. A book or poem, for example, can have one or more themes. Here, we are supposed to choose the sentence that represents a theme of "The Yellow Wallpaper."
The short story "The Yellow Wallpaper" is about mental illness and self-expression. The main character is a woman who, being forbidden from expressing her creativity by her husband, ends up obsessed with the figures on the wallpaper.
If the woman were allowed to be mentally active, to express herself through art and writing, she would have had a better chance at recovering her sanity. Therefore, we can conclude that the correct answer is option D.
Learn more about theme here:
https://brainly.com/question/1673952
#SPJ1