B). People worked diligently to participate in the building of the American dream with the understanding they would profit.
Explanation:
The stock market crash of 1929 in America lead to the Great Depression that left the people struggling to survive. People had invested their diligence and hard work in the building of the nation and the American dream which advocated ascending social mobility. Thus, they deserved to be rewarded suitably but the stock market crash followed by the 'Great Depression' made them lose confidence in business and remain hopeless and struggling to survive. Thus, <u>option B</u> displays the most appropriate reason for people losing hope and confidence in business.
I would say that based on this excerpt and your knowledge of American history, the stock market crash made Americans lose confidence in business because B. people worked diligently to participate in the building of the American dream with the understanding they would profit. However, when the stock market crash happened, they lost all faith and confidence.