Answer
1. RESTRICTIVE; no commas needed.
2. RESTRICTIVE; no commas needed.
3. NONRESTRICTIVE; commas are needed.
4. NONRESTRICTIVE; commas are needed.
5. RESTRICTIVE; no commas needed.
The story the lottery can be considered unrealistic because of the story's setting. it's could happen, it has happened but is it happening today, no.
The question is asking to complete the said passage in your question about the expression of emotions on the characters mind and base on the said passage, the answer among them is an interior monologue. I hope you are satisfied with my answer and feel free to ask for more
The summary of what happened is right here: https://www.sparknotes.com/lit/gatsby/section7/