Why does the author include details about the Lins night out at the Lakeview restaurant in "The All-American Slurp"?
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to reveal the narrator's rejection of American culture
to reveal the narrator's frustration with her parents' rules
to illustrate the narrator's difficulties adapting to American culture
to illustrate the narrator's dislike of dining in public places

to illustrate the narrator's difficulties adapting to American culture

Explanation:

"The All-American Slurp" was written by Linsey Namioka, an American-Chinese writer.

The narrator belonged to the Lins' family. They just recently moved to America and were slowly adapting to the American culture. The situation above happened when Mr. Lin decided to celebrate his promotion with his family at an elegant restaurant called the "Lakeview." It so happened that they decided to order a soup. In China, slurping soup is acceptable. It is a way of showing appreciation. This is what the family did and Lin is seen having the difficulty adapting the most. When the "Shloop" sound of slurping the noodles became loud, Lin excused herself to the ladies' toilet room because she was embarrassed.

So, this explains the answer.