This passage takes place after Amy, Robert, and their families have finished their meal. At the end of the meal, my father leaned back and belched loudly, thanking my mother for her fine cooking. "It's a polite Chinese custom to show you are satisfied," explained my father to our astonished guests. Robert was looking at his plate with a reddened face. The minister managed to muster up a quiet burp. I was stunned into silence for the rest of the night.

—“Fish Cheeks,”
Amy Tan

What evidence from the passage supports the theme “People often care about what others think of them”?

Amy sitting in stunned silence for the rest of the night
Amy worrying that her father is not being himself
Amy needing her father to explain the Chinese custom