Which statement about individual characteristics is correct?

• A. A trait that allows comparison with a group.
• B. A trait that is unique and resulting from natural variation, damage, or wear.
• C. A trait that identifies a group of items.
• D. A trait that cannot be measured.

Answer: (B)

In forensic analysis, individual characteristics are features that are unique to a single item, often arising from natural variation, wear, or damage that produces distinctive patterns. The statement describing a trait as unique and resulting from natural variation, damage, or wear captures that idea precisely: such a feature can distinguish one item from all others and, with enough detail, point to a specific source.

By contrast, a trait that allows comparison with a group reflects class characteristics—features shared by many items in a category and used to associate evidence with a group rather than a single source. A trait that identifies a group is also class-related, not individual. And a trait that cannot be measured isn’t accurate, because many individual characteristics can be observed or measured, even if they appear qualitative.