Which one is the answer?

I think A but I am probably wrong sorry if I am I am 100 % not sure

The United States and the European country Germany were the slowest to recover from the depression. The correct option in regards to all the options given in the question is option "d". The time period between 1929 and 1939 is considered the period of Great Depression. It is considered as the longest and the deepest downturn of economy to have affected the countries around the globe. During the stock market crash of 1929 in the United States, several investors were simply  swept away.