The excerpt depicting Gatsby's mysterious nature and the symbol of the green light is the best example of foreshadowing in The Great Gatsby.
The best example of foreshadowing in The Great Gatsby is the excerpt: he stretched out his arms toward the dark water in a curious way, and, far as I was from him, I could have sworn he was trembling. Involuntarily I glanced seaward- and distinguished nothing except a single green light, minute and far away, that might have been the end of a dock. When I looked once more for Gatsby he had vanished, and I was alone again in the unquiet darkness. This excerpt foreshadows Gatsby's mysterious and elusive nature, as well as the theme of longing and unattainable dreams represented by the green light.
https://brainly.com/question/30124420