Final answer:
Chris, a criminology Ph.D. student, can obtain information on unreported crimes from the National Crime Victimization Survey (NCVS), a self-report study conducted by the U.S. Bureau of Justice Statistics (BJS).
Step-by-step explanation:
Chris, a criminology Ph.D. student, can obtain information on crimes that were not reported to the police from the National Crime Victimization Survey (NCVS). The NCVS is a self-report study conducted by the U.S. Bureau of Justice Statistics (BJS) that collects data through voluntary response methods, such as questionnaires or telephone interviews. This survey asks approximately 160,000 people in the United States about the frequency and types of crime they've experienced in their daily lives, including crimes that were not reported to the police.