I read this book last year so take this with a grain of salt.
Gene jumps from the tree to compete with Finny due to the fact that Gene is always trying to do better than Finny. He is put under the grasp of peer pressure due to Finny almost forcing him to do this. Ever since he first jumped Finny kept pressuring him to jump since he thought Gene enjoyed jumping.
Rather than uses this answer you should probably just reread chapters 3-4
Answer:
Nick Carraway, Tom Buchanan, Daisy Buchanan, and Jay Gatsby
Explanation:
Nick Carraway
The novel's narrator, Nick is a young man from Minnesota who, after being educated at Yale and fighting in World War I, goes to New York City to learn the bond business. Honest, tolerant, and inclined to reserve judgment, Nick often serves as a confidant for those with troubling secrets.
Tom Buchanan
Powerfully built and hailing from a socially solid old family, Tom is an arrogant, hypocritical bully. His social attitudes are laced with racism and sexism, and he never even considers trying to live up to the moral standard he demands from those around him.
jay gatsby
Gatsby is a dreamer, constantly envisioning a better future for himself and focusing on what is possible, rather than what is practical. Like many Intuitive personalities, he often seems somewhat distracted or detached from what's happening around him.
People should not worry about what others think.