What type of information can be obtained from forensic testing?

Forensic testing is crucial in crime scene investigation as it helps establish connections between individuals, locations, or objects involved in criminal activity. This linkage can be achieved through various forms of evidence, such as DNA analysis, fingerprint comparisons, ballistic testing, and trace evidence examination. By identifying these connections, law enforcement can corroborate witness statements, build cases, and link suspects to scenes of crime based on physical evidence.

Other options do not directly relate to the primary function of forensic testing. Financial records could provide context regarding a suspect's financial activities and possible motives, while witness personality traits are subjective and would not be obtained through forensic means. Similarly, although location history could be relevant in an investigative context, it usually falls under digital forensics or surveillance rather than the traditional forensic testing of physical evidence at a crime scene. Thus, the focus of forensic testing remains on establishing direct links between physical evidence and the elements of a crime.