Read the excerpt from "Fish Cheeks.”Then my father poked his chopsticks just below the fish eye and plucked out the soft meat. "Amy, your favorite,” he said, offering me the tender fish cheek. I wanted to disappear.What is Amy Tan's purpose?

Amy describes her father offering her the fish cheek and her reaction: “I wanted to disappear.” This shows how embarrassed she felt in that moment, so the purpose is to entertain readers by expressing her embarrassment. The excerpt does not give instructions about chopsticks or focus on persuading readers about what to eat.

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