Final answer:
Victim surveys are the source that provides information on the dark figure of crime, particularly the National Crime Victimization Survey by the Bureau of Justice Statistics.
Step-by-step explanation:
The source that provides information on the dark figure of crime, which refers to crime that is not captured in official statistics, is B) Victim surveys. The U.S. Bureau of Justice Statistics' National Crime Victimization Survey (NCVS) is an example of such a survey.
Victim surveys like the NCVS collect data by asking individuals about their experiences with crime, regardless of whether these incidents were reported to law enforcement or captured in police reports. While official crime statistics and police reports can give us a picture of reported crime, victim surveys help to uncover the extent of unreported or undiscovered crime, thereby shedding light on the dark figure of crime.