Which of the following items is considered physical evidence?

The identification of a weapon found at the crime scene as physical evidence is grounded in its tangible nature and direct connection to the investigation. Physical evidence refers to any object that can be perceived through the senses and has the potential to play an important role in establishing facts related to a crime. A weapon can provide crucial information regarding the manner in which a crime was committed, potential suspects, and links to the victim or the scene. In this case, the weapon serves as a real, concrete item that can undergo forensic analysis, potentially yielding fingerprints, DNA, or other critical information that can substantiate claims made during the investigation.

The other items listed do not fit the criteria for physical evidence. A signed confession, while significant in legal proceedings, is a statement made by a suspect and does not constitute physical evidence in itself. A police report is a documented summary of the incident but lacks the direct physical connection to the crime that would allow it to be classified as physical evidence. Similarly, an eyewitness account, although vital for understanding the context and sequence of events, is a testimonial type of evidence rather than physical evidence that can be examined or analyzed in a tangible manner.