Which of the following is NOT a category of evidence in criminal investigations?

Categorizations of evidence play a crucial role in criminal investigations, shaping how cases are built and prosecuted. The three recognized categories are inculpatory evidence, exculpatory evidence, and circumstantial evidence. Inculpatory evidence serves to demonstrate a person's involvement in a crime, while exculpatory evidence provides grounds for a defendant's innocence. Circumstantial evidence consists of indirect evidence that implies a fact or event but does not directly prove it.

Admissible evidence, on the other hand, is not a category of evidence itself but refers to whether evidence can be legally introduced in court. Its focus is on legal standards, such as relevance and reliability, rather than the inherent nature of the evidence. Thus, it acts as a filter for the types of evidence that can be used in a trial rather than a classification of the evidence itself. Understanding these distinctions is essential for effective legal practice and investigations.