Final answer:
The theme of love and betrayal is best revealed by the conflict, with aspects of Lucy's forgotten decision and the influence of the Old South on the characters' actions further emphasizing this theme. So, the correct answer is b) Power and corruption.
Step-by-step explanation:
The theme best revealed by this conflict appears to be love and betrayal.
In examining the storyline, points 3 to 6 involve questions regarding characters' decisions, the lack of memory of a pivotal decision, and the influence of the past, particularly the Old South.
The themes of family and loyalty, or revenge and justice, could potentially be relevant as well, depending on the specific details of the story.
For instance, Lucy's lack of memory regarding her decision to turn in her fiancé could point to themes of love and the betrayal of that love.
The Old South often carries connotations of honor, tradition, and loyalty, so if these aspects are central to the conflict, the theme may lean more towards family and loyalty.
Nonetheless, without the specific context of the story, the question seems to emphasize betrayal in a romantic context, which corresponds with the first theme.
So, the correct answer is b) Power and corruption.