Final answer:
Fitzgerald develops Gatsby's character most significantly through his interactions with other characters. This method allows Fitzgerald to craft a layered and multifaceted persona that becomes central to the themes of longing and idealism in his work. Option B is correct answer.
Step-by-step explanation:
In F. Scott Fitzgerald's work, Gatsby's character is most developed through interactions with other characters (b). This character development is evident as Fitzgerald provides great insight into Gatsby's persona via his social encounters and relations with the surrounding cast, particularly through the eyes of the narrator, Nick Carraway.
Stories such as "Bernice Bobs Her Hair," "Winter Dreams," and "The Diamond as Big as the Ritz," further showcase Fitzgerald's keen ability to weave complex characters and social commentary through interactions, tailored to both the character's development and the themes of the era the stories are set in.
In The Great Gatsby, Gatsby's mystique is perpetuated not only by the grand parties he throws, which are a collection of interactions, but also the conversations and observations of him by others.
Specific moments, such as Gatsby's interactions with Daisy, help to peel back the layers of his character, revealing his deep-seated longing and the extent of his idealism. Fitzgerald's choice to relay Gatsby's story through the flawed perspective of Nick adds to the sense that Gatsby is an enigma; his character is observed, judged, and speculated about rather than explicitly outlined or defined through direct narration or symbolic representation.