O B. People need to be mentally active and engaged to keep their sanity
Explanation:
The importance of self-expression is one of the highlights of the book, "The Yellow Wallpaper" by Charlotte Perkins Gilman. In the book, the narrator, a woman plagued with mental illness experiences difficulty recovering because her husband focuses on physical treatment. The woman found solace and sanity in writing for she kept a personal journal which she hid from others. Writing was therapeutic for this woman and this shows that keeping oneself mentally engaged helps to safeguard sanity.
