Answer:
For me, the line that supports the inference that Oedipus is a proud man is the last one: "I, Oedipus, whose fame all men acknowledge."
Explanation:
In this line, Oedipus mentions his fame among the people. He says it with proud, he remembers his audience that he is a well-known person and say it out loud proudly. If he wasn't proud of what is said about him, he wouldn't mention the fame he has. In stead, he exposes the fame he has in order to let everyone know what is said of him because he feels proud of it.