Which of the following is an example of physical evidence?

Physical evidence refers to tangible objects or materials that can be collected and analyzed in the investigation of a crime. Drugs used in a crime serve as a direct physical manifestation of illegal activity, making them a key component of evidence in criminal cases. This type of evidence can be seized at the crime scene, analyzed in a laboratory, and can provide critical insights into the nature and circumstances of the crime.

In contrast, bank records and medical records are forms of documentary evidence, which involve written or printed documentation rather than physical objects. A witness statement involves verbal testimony from a person about their observations or experiences, which is also not a physical entity. Each of these alternatives lacks the tangible aspect that characterizes physical evidence, thereby reinforcing the correctness of the choice regarding drugs as physical evidence.