What inspires the community to seek Oedipus’ help?

The community's desire to seek Oedipus' assistance is primarily driven by the plague afflicting Thebes. The people are suffering from a devastating crisis marked by illness, famine, and overall despair. In this context, Oedipus, who is already recognized as a strong leader due to his past success in defeating the Sphinx, is seen as their best hope for resolution. His previous actions have established him as a protector of the city, and the urgent need for relief from the plague prompts the citizens to turn to him for help.

The other options present situations—such as a prophecy, fear of the Sphinx, or a flood—that may evoke concern within the community but do not directly motivate their immediate call for Oedipus' intervention in the way the plague does. The plague represents a dire threat to the health and stability of Thebes, making it the most compelling reason for the citizens to seek out their king's help.