I believe the answer is D. He will no longer be alone The conflicting motivation about his last wish revolves around whether he should choose to use his wish to make Yoni came back to live and let the goldfish go or to keep the goldfish and be a murderer. Either choice technically won't make him be 'alone', so i think option d is not suitable in this context.
The kennings show that the battle is not just between man and monster, but between forces of good and evil. Grendel is not just evil himself, but is a source and caretaker of evil.
