Answer:
A. After they nursed under water
Explanation:
The stock market crash caused everyone to take the money out of banks, but he banks were running out. the reason for this was because the money left in stocks lost value.
Agriculture plays a crucial role in the rise and development of civilizations, since it allows for there to be a "food surplus"--meaning that people other than farmers can spend time and effort developing new skills and practicing new trades.
The WPB or War Production Board set the products that would be needed for war and they determined their pricing.
So I agree with you, the answer is A.
But I must admit I was a bit iffy between A and D but I'd still say that A is a better choice.
Hope this helped