Answer:
C. Politicians, economists, and investors had a limited amount of economic data available to them at the time.
Step-by-step explanation:
The Great Depression of the 1930s was the largest recession in history and its causes were overproduction of goods and the expansion of credit rampant by banks, which led to the widespread bankruptcy of banks and then businesses and families.
Among the above options, third alternative is the most correct. In the context of the 1920s and 1930s, economic theory was still not well developed and there were no good options for analytical tools either, which made economic forecasting difficult. Not even the Federal Reserve existed. Today there are modern instruments of predictability, such as models and statistical software, and a large regulatory apparatus.