When stock prices began to fall in the United States, how did Americans react? Brokers tried to sell stocks, but no one wanted to buy them.
Many people scrambled to buy stocks on margin.
People wanted to buy ntocks, but there were none left to buy.
Brokers remained confident that prices would rise again.

A I think I'm not sure

Explanation:

information is crucial for making good decisions

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.