Let's look at lines 17-19 again:
<span>17. Its letters, although naturally lying
18. Like the knight Pinto-Mendez Ferdinando-
19. Still form a synonym for Truth-Cease trying!
The crucial word here is "like" - it means that the letters are "like" - compared to the knight. A direct comparison such as this one is a Simile - this is the correct answer.
A metaphor is similar to a simile in that it treats something as if it was another thing, but it does not include a direct comparison.
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It’s something you can do as a group together instead of individuals. It helps people to do better and rely on others
I think it's to be or to se
The narrator believed that a woman is trapped behind the wallpaper. The woman is the representation of her repressed self being trapped in it. The domestic world had made her the prisoner. She had silently submitted her to the household chores which has made her live in the domestic prison. The pattern of the wallpaper makes her realize how far she had been a prison in such a lifestyle. The shaking and the crawling of the wallpaper are symbolic of her being trapped inside it.