Final answer:
Gatsby tells Nick that Wolfsheim fixed the 1919 World Series in The Great Gatsby as he reveals a secret with potential consequences.
Step-by-step explanation:
In F. Scott Fitzgerald's novel The Great Gatsby, Gatsby tells Nick that Wolfsheim fixed the 1919 World Series in a cool and hesitant manner because he is revealing a secret that could have serious consequences. Gatsby hesitates because he understands the gravity of the accusation he is making and the potential consequences it could have for him and Wolfsheim. By revealing this information, Gatsby is trying to impress Nick and maintain his reputation as a mysterious and powerful figure.