Why does the author include details about the purchases the Lin family makes at the rummage sale in "The All-American Slurp"?

The Lins buy used household items at the rummage sale, showing how they make an American-style home while spending carefully. These details illustrate their efforts to afford and adapt to an American lifestyle, rather than showing that they want expensive things. The correct choice is C, “to illustrate the Lins’ efforts to afford and live an American lifestyle.”

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