What is a central idea of "The Adventures of Theseus"? A. Theseus discovers his father's sword and sandals under a rock. B. Theseus saves the youths and maidens from the clutches of the Minotaur. C. Theseus helps his father by slaying the Minotaur and defying King Minos. D. Theseus trains to improve his strength, so he can lift a rock and find out about his father.