What type of evidence can be described as having individual characteristics?

Individual characteristics refer to features that are unique to a specific source or item, which can be used to identify it uniquely among others. In the context of the question, specific scratches on a unique object exemplify individual characteristics because those scratches arise from the object's particular use or encounter with surfaces, making them distinct and identifiable.

For example, if a tool has unique wear marks or scratches on it, those details can serve to link that tool directly to a crime scene or to a particular event, thus providing crucial evidence in an investigation. The uniqueness of these marks allows forensic analysts to determine whether an object is the source of some evidence recovered at a crime scene, which is a fundamental principle in forensic science.

In contrast, common fabric threads, universal tire tread patterns, and shared color of a product all involve characteristics that are not unique. They can belong to multiple objects or sources, making them less reliable when it comes to establishing a definitive link between evidence and a specific individual or object.