Descriptive details were used by Amy Tan to show how embarrassing their meal was.
Descriptive details simply mean the use of imagery in order to allow the readers to be able to understand the scene. In this case there's sensory recreation of objects or experiences.
Based on the story, Amy Tan used descriptive details to show that her family's meal was embarrassing. This was deduced as she illustrated how her father burped.
The red face of Robert also illustrated the embarrassment. The imagery used was vital in expressing the embarrassment that was faced.
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