Final answer:
In The Great Gatsby, Nick's repetition of 'It just shows you' when Gatsby's father shows him Gatsby's early schedule for self-improvement signifies his admiration for Gatsby's ambitious pursuit of the American Dream.
Step-by-step explanation:
In the novel The Great Gatsby, when Gatsby's father shows him Gatsby's early schedule for self-improvement, Nick repeats, 'It just shows you.' This repetition showcases Nick's thoughts on the commitment and dedication Gatsby had towards achieving his goals. Nick is impressed by the schedule, recognizing the amount of effort Gatsby put into bettering himself. The repetition signifies Nick's admiration for Gatsby's ambition and highlights the theme of the American Dream.