I believe it is lonely because one of the line says "I took the one less traveled by," and I can see it sounds like the narrator is feeling lonely.
The right answer is He thinks they are violent and untrustworthy.
The narrative of the book is made in the first person, full of emotion. Grendel, the monster, observes humans with a cynical point of view; rejected by his monstrosity, he reveals the hypocrisy behind human civilization, the re-creation of history through the poetic lies of bards, self-destruction fed by infinite human greed.
The correct answer among all the other choices is A.) attributes. This element is analogous to "sweet herbs" in this analogy from Little Women by Louisa May Alcott. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
I was is the more proper way of saying you were doing something for example “I was eating” not “I were eating”
I would go with D, because it seems that there is no answer option you wouldn't use in a presentation. Hopefully this helps