Final answer:
The prejudicial thought that enters the narrator's mind as he runs away is that C. Hassan is not a human being.
Step-by-step explanation:
The prejudicial thought that enters the narrator's mind as he runs away is option C. Hassan is not a human being.
In the text, the narrator reveals his internal struggle as he contemplates whether or not to accept money for his ransom. He questions if he should allow himself to be saved by a person he considers morally reprehensible.
While he acknowledges that he would accept money as a loan to save his life, he does not want to consider the person as a friend or savior, but merely as a money-lender.