Final answer:
In Book Six of The Odyssey, Nausicaa instructs Odysseus to approach her mother first at the palace to protect her honor and secure assistance for him.
Step-by-step explanation:
In Book Six of The Odyssey, Nausicaa protects herself by instructing Odysseus to approach her mother first when he arrives at the palace seeking assistance. This strategy is meant to ensure propriety and secure a warm reception for Odysseus from Nausicaa's parents, who are king and queen of the Phaeacians. By directing Odysseus to her mother, Nausicaa demonstrates her prudence and understanding of social customs, as well as her desire to help Odysseus while also maintaining her reputation and honor.