In the passage "human problems" or "world problems" refers mainly to ______.

A．The Congress was wise to repeal Prohibition.
B．The Prohibition Era was characterized by a decrease in crime and drunkenness.
C．During Prohibition, most Americans stopped drinking.
D．Laws should be passed to ban the sale of alcoholic beverages.

A．lived in fear of the law
B．were willing to risk arrest for the pleasure of liquor
C．recklessly endangered their communities
D．were respectful of the legal sanctions placed on them