Final answer:
Juror 3 and Juror 8 are the two characters that most significantly advance the themes of justice, reasonable doubt, and personal growth in '12 Angry Men'. The correct answer is A. Juror 3 and Juror 8.
Step-by-step explanation:
In the play "12 Angry Men," the two characters that advance the theme of the play most are Juror 3 and Juror 8. Juror 8 is the protagonist who advocates for a fair trial and is the only initial holdout voting "not guilty."
He embodies the themes of justice, reasonable doubt, and the importance of a thorough deliberation in a jury setting. Conversely, Juror 3 represents the antagonist with his stubbornness and personal biases influencing his vote of "guilty."
His eventual change of heart demonstrates the play's message about the capacity for personal growth and the impact of confronting one's preconceptions.