On october 30, 1929, many of the remaining investors in the us stock market a) tried to create a rally. b) pulled out of the market. c) closed the stock market. d) bought falling stocks.

On October 30, 1929, many of the remaining investors in the US stock market bought falling stocks.

On October, 30th 1929 remaining investors along with others started purchasing large numbers of stock in the stock market aiming to stop the Great Economic Depression.

In fact, in 1929 the stock market of the US crashed. Later on, the London stock market also crashed. That day is historically known as "Black Tuesday".

i believe it would be capitalism