Final answer:
Dexter from 'Winter Dreams' by F. Scott Fitzgerald is a dynamic character, as he undergoes significant changes throughout the story in his pursuit of his ambitions and romantic interests.
Step-by-step explanation:
The question asks which statement is true about the character Dexter in F. Scott Fitzgerald's "Winter Dreams." The text provided reveals Dexter to be a person whose ambitions and desires change over time, as indicated by his actions and aspirations, such as his evolving feelings toward Judy Jones and his personal successes. The best answer, therefore, is that Dexter is a dynamic character because the narrative follows his developments and transformations driven by his inner 'winter dreams,' his social ambitions, and romantic pursuits.