Answer: B) It shows that he goes from a man who wants to help the world to someone determined to kill another living being.
Step-by-step explanation: In the given excerpt from "Frankenstein" by Mary Shelley, we can see that Dr. Frankenstein is experiencing a drastic change in his personality and in his view of life. From the given options, the one that best illustrate Victor's development as a character over the course of the novel, is the corresponding to option C: It shows that he goes from a man who wants to help the world to someone determined to kill another living being (we can see that in the phrase: "dreams that had been my food and pleasant rest for so long a space, were now become a hell to me; and the change was so rapid, the overthrow so complete").