Final Answer:
The two systems that use surveys are a. UCR and NCVS.
Step-by-step explanation:
Both the Uniform Crime Reporting (UCR) program and the National Crime Victimization Survey (NCVS) utilize surveys for collecting data related to crime and criminal activities. The UCR gathers information on reported crimes from law enforcement agencies, while the NCVS collects data by surveying individuals about their experiences with crime, including incidents that might not have been reported to the police.
The UCR compiles statistics based on reports submitted by law enforcement agencies, providing data on various types of crimes and arrests. On the other hand, the NCVS gathers information through household surveys, interviewing individuals about their personal experiences as victims of crime.
Therefore, options a. UCR and NCVS are the correct systems that utilize surveys for collecting data on crime-related information.