Final answer:
On Black Tuesday, all of the above - stock market brokers, banks, and people with checking/savings accounts - lost money.
Step-by-step explanation:
The correct answer is d. All of the above. On Black Tuesday, which occurred on October 29, 1929, the stock market crashed, causing widespread financial losses. Stock market brokers, banks, and people with checking/savings accounts all lost money during this event.
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