The excerpt mentions difficult adventures and long journey of Odysseus alongside with his and his men's bravery. Therefore, the correct conclusion for this answer is the second option - Odysseus learned much and encountered many obstacles on his long journey to bring himself and his men home safely.
I think the correct answer from the choices listed above is the last option. The most effective paraphrase of the excerpt above would be that Odysseus and his shipmates spent many long and difficult days at sea during their travels home. Hope this answers the question.
