Which of the following is NOT one of the three types of evidence discussed?

The correct response identifies "Mental" as not being one of the three recognized types of evidence typically discussed in law enforcement and investigative contexts.

Evaluating the standard categories, physical evidence refers to tangible items that can be collected and analyzed, such as fingerprints, weapons, or DNA. Documentary evidence encompasses written or recorded materials that provide information relevant to a case, including contracts, emails, or official records. Testimonial evidence consists of statements made by witnesses or participants regarding their observations or experiences related to an incident.

"mental," however, does not fit into these established categories. It is not a recognized type of evidence within legal frameworks, which are primarily focused on physical, documentary, and testimonial descriptions of evidence. Understanding these definitions is essential for effective investigation practices and for ensuring that appropriate and admissible evidence is utilized in legal proceedings.