Hello! I would say the narrator is insane because he can still hear the old man’s heart thumping from underneath the floorboards even after he killed him. His guilt gets the better of him and he turns himself in to the cops. I don’t have any evidence sense I don’t have the story on me, but use something from the story along the lines where he “hears” the thumping of his heart as evidence.
The third one is your answer
well for me it looks like a paragraph but since you say it's a sentence it's information and it's telling real facts I guess most of informational text have sentences mostly
Hey friend!
Let's figure this out!
"On the other hand," is a typical transition that shows a relationship between two ideas. It shows contrast.
Hope this helps! {Don't forget Brainliest} :)
