Answer:
schooling his people in civil and social manners.
Step-by-step explanation:
The Odyssey is an epic written by Homer. One of the main theme that can be found in the epic is hospitality.
This theme is evident when Telechamus met Nestor and Menelaus, on his voyage. While he stayed with them, he learned the civil and social manners there. This learning of hospitality makes him to mature in his nature.
So, when he returned to Ithaca, he decided to teach his people the civil and social manners. The duty that was bestowed upon him was to teach his people civil and social manners that he learned on his voyage.
So, the correct answer is the first option.