Final answer:
The term "La Cosa Nostra" was used by law enforcement to describe organized crime groups like the mafia, but not by the criminals themselves; prominent figures like A) Al Capone ran extensive operations but did not use this term.
Step-by-step explanation:
The term "La Cosa Nostra" was given to the mafia not by any prominent mafia figure themselves, but it emerged as a way for law enforcement and others to describe these criminal organizations.
Although high-profile gangsters such as Al Capone led organized crime during Prohibition, with activities like bootlegging, gambling, and running soup kitchens, they never referred to their own organizations using that term. Capone's Chicago Outfit exemplified the era's organized crime, and he was eventually convicted of tax evasion.