Gatsby is nervous about meeting Daisy at Nick's place. He is panicking and Nick tells him to stop acting like a little boy.
Okay. I cannot see the article, again but will try my hardest to answer this anyway.
The purpose can usually be seen in the first sentence or paragraph (unless you have an excerpt). Though it may not be too specific it will usually be backed up by evidence later in the passage. A purpose can always be proven by text details.
Choice of details: should support the purpose
organization: Some things are good for some purposes.
e.g. cause effect, shows the good or bad effects of a purpose. The author can support the purpose or no.
chronological can show how something has changed over time.
etc.
Try to identify the main structure and how the passage is organized and how it supports the main idea.
Answer: Hasty generalization.
Explanation: You immediately assumed that because you met two Californians that were tan, you assumed that all Californians are tan, despite only meeting two. Thus, it's a hasty generalization.
Explanation:
Like what? Insert full picture. And by past job it means for you not for us as it would differ for every person or individual.