This is a part of his supreme ordeal. His return home is much broader and includes his supreme ordeal which is what you described in the question. He fought them because he wanted to stop them from taking his wife Penelope. This was during the competition where they had to prove themselves.
The error in this sentence is a A) pronoun-antecedent voice agreement error. But it should be noted that this has become more standard usage in common dialogue.
C, slave narratives..............
Both authors suggest that coral reefs are fragile. Both authors state that something must be done to save the reefs. Both authors state that coral reefs are polluting the ocean floor.
