Which sentence uses an adverbial clause to add variety and interest to its meaning?

a) no one knew what the theme of the dancing contest for next year would be.
b) the emcee, along with the school principal, announced the theme for next year's dancing contest.
c) after all the confetti had fallen, the emcee announced the theme for next year's dancing contest.
eliminate
d) the contestants in the dancing contest listened to the announcement of next year's theme.

A boy leads in the blind prophet Tiresias. Oedipus begs him to reveal who Laius’s murderer is, but Tiresias answers only that he knows the truth but wishes he did not. Puzzled at first, then angry, Oedipus insists that Tiresias tell Thebes what he knows. Provoked by the anger and insults of Oedipus, Tiresias begins to hint at his knowledge. Finally, when Oedipus furiously accuses Tiresias of the murder, Tiresias tells Oedipus that Oedipus himself is the curse. Oedipus dares Tiresias to say it again, and so Tiresias calls Oedipus the murderer. The king criticizes Tiresias’s powers wildly and insults his blindness, but Tiresias only responds that the insults will eventually be turned on Oedipus by all of Thebes. Driven into a fury by the accusation, Oedipus proceeds to concoct a story that Creon and Tiresias are conspiring to overthrow him.

The leader of the Chorus asks Oedipus to calm down, but Tiresias only taunts Oedipus further, saying that the king does not even know who his parents are. This statement both infuriates and intrigues Oedipus, who asks for the truth of his parentage. Tiresias answers only in riddles, saying that the murderer of Laius will turn out to be both brother and father to his children, both son and husband to his mother. The characters exit and the Chorus takes the stage, confused and unsure whom to believe. They resolve that they will not believe any of these accusations against Oedipus unless they are shown proof.

Creon enters, soon followed by Oedipus. Oedipus accuses Creon of trying to overthrow him, since it was he who recommended that Tiresias come. Creon asks Oedipus to be rational, but Oedipus says that he wants Creon murdered. Both Creon and the leader of the Chorus try to get Oedipus to understand that he’s concocting fantasies, but Oedipus is resolute in his conclusions and his fury.