When Themistocles and the navy get back to Athens what does he encourage the Athenians to do that will help when the Persians come to burn the city?

When Themistocles and the navy return to Athens, he encourages the Athenians to evacuate the city and take refuge on the nearby island of Salamis. He emphasizes the importance of using their naval strength to confront the Persians at sea, rather than risking a land battle. By doing so, Themistocles aims to preserve the population and leverage the Athenian fleet's superiority to defeat the Persian forces, ultimately safeguarding their future.