Read this excerpt from "The All-American Slurp."

The lady harpist stopped playing to take a rest. And in the silence, our family’s consumption of soup suddenly seemed unnaturally loud. You know how it sounds on a rocky beach when the tide goes out and the water drains from all those little pools? They go shloop, shloop, shloop. That was the Lin family, eating soup.

What story element does the author develop in this excerpt?