Final answer:
Alcinous suggests Nausicaa made a mistake by not directly bringing Odysseus, whom she found washed ashore, to her parents, failing to fully adhere to the expected customs of hospitality.
Step-by-step explanation:
Alcinous, in Homer's The Odyssey, implies that his daughter Nausicaa made a mistake by not bringing Odysseus to her parents' home herself after she found him washed ashore. He believes that it would have been more fitting and hospitable for her to introduce the stranger directly rather than having him arrive on his own, as it was customary to show proper respect and care for guests, especially one in need as Odysseus was.