The police are searching for a serial rapist. They have few leads, such as a description of the assailant, or other information that would be helpful, in identifying the rapist.
The police believe the rapist may have committed similar acts in other cities. The police would use ____ to help determine if this was the case.
A. interviews
B. surveillance cameras
C. DNA databases
D. line-ups
E. geographic information systems (GIS)
Answer: E
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