Sophocles uses the character of Teiresias to affect the play for the following: he furthers the plot by causing Creon to see his errors, he develops the theme of "human law vs. divine law," and causes the audience's mood to shift towards anxious and fearful.
I answered it on edge2020, and got it right. Hope it helps! :)
Sophocles utilizes Teiresias to influence both the plot and gathering of people and additionally to uncover topic. The character gives the heartbreaking prescience that makes Creon change his game-plan. Also, the character would have enormously influenced the state of mind of the antiquated gathering of people in light of the criticalness they would have in a split second appended to the visually impaired prophet. The prescience highlights a noteworthy clash of the play in which the battle between human expert and celestial specialist is uncovered. Teiresias' character is utilized to remind Creon that a definitive specialist has a place with the divine beings.
