The third option is the correct one - "it tells a moral tale that is at odds with the pardoner's own persona".
Let me know if this helped you! (:
The name of the common error in this sentence is C) dangling modifier.
We don't know what the dangling modifier (having risen because of the rains) actually refers to - does it refer to the hikers or the river?
Although using logic you can infer that it refers to the river, but still, the order of the words makes it an incorrect sentence.
You could show her how your feeling and tell her why
