Answer:
A: Ambition.
Explanation:
Charles Dickens' Great Expectations tells the story of a young orphaned kid working towards improving his social status. He did anything he could to try to improve his social standing, even if that mean hurting the people he love. He even expressed contempt for his former friends in Kent after he moved to London to become a gentleman.
Likewise, William Shakespeare's Julius Caesar is also about a ruler who would do anything to keep his power and social class, even at the cost of hurting his loyal friends. And it was due to this conflict that led his loyal friend Brutus to kill him, so that a dictator may not rule in Rome.
And through these two stories, or rather characters, we can know that the two deals with the theme of ambition overtaking their lives. For the sake of ambitious aims, both characters decide to move forward even at the cost of losing their loyal friends.
