You need more info on your question for one to answerz
In my opinion spelling is a subject. I believe it is a subject because it is something you study in elementary and you will need to know it for the rest of your life.
It was an act of sanity, as the author had experienced this event herself. she portrays this through the narrator, she writes it to show the public what she went through,the way she lost her sanity. This is my opinion on this,I hope you do get this correct!
Answer:
Ans. Though Horace planned everything meticulously; he failed led because of the smart lady. She posed herself to be the owner of the house and convinced him to open the shelf as she had “not the password of the shelf. Horace got trapped in her plot.