The correct answer is A.
In F. Scott Fitzgerald's novel "The Great Gatsby", the narrator, Nick, is often cosidered to be biased.
Throughout the novel, he seems to favour Gatsby over the rest of the characters, speacially over Tom.
Nick thinks Gatsby is admirable and sees that he is driven by love; this to him is praise-worthy.
In the quote: "There was something gorgeous about him [gatsby], some heightened sensitivity to the promises of life..." we can sense Nick's admiration and esteem for Gatsby.