The correct answer is true.
It is true that the US turned towards increased consumerism happened in the mid 20th century.
Indeed, there is a term that was coined in those years: "the roaring 1920s." A moment in the history of the United States when people started to buy many things, needed or not, many of them bought using credit. Middles class Americans could afford things like a car, furniture or electronics for the first time using credit.