Which of the following is classified as physical evidence?

Physical evidence refers to tangible objects that can be collected and analyzed in a criminal investigation. This type of evidence typically includes any physical item that can verify facts pertaining to the case. Items such as weapons or toxicological samples fall into this category because they can provide crucial information about the crime, such as the means by which it was committed or the substances involved in the incident. These objects can be directly analyzed to gather forensic evidence, linking them to the crime scene or to individuals involved in the crime.

In contrast, witness statements and text messages, while valuable, are not classified as physical evidence because they are not tangible items; rather, they represent accounts or communications that can support a case but do not have a physical presence. Similarly, photographs, though they can document and preserve scenes or objects, are considered visual evidence rather than physical evidence, as they do not consist of tangible physical items that can be analyzed in a forensic manner. Hence, the focus on tangible, analyzable items makes weapons and toxicological samples the clear choice for physical evidence.