Final answer:
Mrs. Dubose's death in 'To Kill a Mockingbird' symbolizes personal courage and moral triumph over one's weaknesses.
Step-by-step explanation:
In To Kill a Mockingbird, the death of Mrs. Dubose becomes symbolic of the themes of courage and moral victory. Her struggle to free herself from morphine addiction before she dies represents a human's capacity to fight against one's own weaknesses and the wrongs in society. Although she is seen as a disagreeable character, her death highlights the importance of confronting personal demons and maintaining personal integrity.