For Part A, the statement that BEST describes the central idea of the passage is:
D. Although Frankenstein had long dreamed of giving life to an inanimate body, success brings him disgust and disappointment rather than glory.
For Part B, the evidence from the text that BEST supports this answer is:
D. “I had desired it with an ardour that far exceeded moderation; but now that I had finished, the beauty of the dream vanished, and breathless horror and disgust filled my heart.” (3)
This line clearly demonstrates Frankenstein's initial aspirations contrasted with the overwhelming negative emotions he feels upon achieving his goal, confirming the central idea about the disappointment of his success.