Which of the following types of evidence is least likely to be categorized as physical evidence?

Witness testimony is least likely to be categorized as physical evidence because it is not tangible or material in nature. Physical evidence refers to any object or material that can be physically examined or analyzed. This includes items like weapons, fingerprints, and clothing, all of which can be directly collected from a crime scene or related investigation and can help establish facts related to the case.

In contrast, witness testimony relies on individuals recounting their observations or experiences, which can be subjective and varies from person to person. This type of evidence is considered testimonial rather than physical, as it provides accounts based on perception and memory rather than objective physical objects or materials that can be examined scientifically.