Answer: Statement C
The hysteria of last Thursday had passed as quickly as it developed.
Step-by-step explanation:
The statement from the article that shows that people believed that the drop in the market was anomaly is “the hysteria of last Thursday had passed as quickly as it developed.”
The other options are;
A. Bankers and brokers strove to put their houses in order.
B. The conductors graphically pointed out, where all that money was lost last week.
Options A and B do not really show that the situation was an anomaly.
But option C describing the drop in the market value as a hysteria - which refers to a situation that is abnormal and out of control makes people believe that the drop was a hysteria.