In which Greek tragedy does Oedipus unknowingly fulfill a prophecy that leads to his tragic fate?
A. Oedipus at Colonus
B. Medea
C. Oedipus Rex
D. The Bacchae
"Oedipus Rex" is a Greek tragedy where Oedipus unknowingly fulfills a prophecy, leading to his tragic fate and exploring themes of fate and free will.