Which type of evidence involves hair or fiber that identifies a suspect?

The correct answer pertains to individual evidence, which is evidence that can be linked directly to a single source with a high degree of certainty. In the context of hair or fiber, individual evidence is crucial when it can be analyzed to match a specific individual. For instance, if hair found at a crime scene has unique characteristics that match a known sample from a suspect, it provides compelling evidence to support their involvement in a crime.

In contrast, class evidence refers to materials that can be linked to a group rather than an individual. Hair or fibers may be class evidence if they can only narrow down to a type, color, or make but cannot specifically identify one individual, such as a general type of fabric or species of animal from which hair is derived.

Trace evidence is often associated with micro materials like hair or fibers but is not necessarily individual evidence unless it can be definitively linked back to a suspect. Trace evidence can provide context but lacks the specificity required for individual identification.

Digital evidence encompasses electronic data, such as emails, texts, or digital files, and is unrelated to physical materials like hair or fibers. Therefore, the identification of a suspect through hair or fiber primarily relies on the unique characteristics that can lead to individual evidence, making that the correct choice.