The correct answer is A) People were willing to borrow money to buy products instead of saving for them.
During the 1920's, Americans ability to buy products on credit or on margin, allowed access to luxury goods they didn't have the ability to purchase before this time. This ability to borrow money from banks allowed millions of Americans to buy things like stocks with only a small portion down. This ultimately helped lead to the Great Depression of the 1930's, as the Stock Market Crash of 1929 lead to the banrkupting of millions of American citizens.