Which statement correctly describes a latent print?

• A. A fingerprint that is immediately visible.
• B. A category of evidence.
• C. A type of toolmark.
• D. A fingerprint not visible to the naked eye.

Answer: (D)

Latent fingerprints are impressions of friction ridge skin that are not visible without enhancement. They come from sweat and oils left on a surface, which are usually colorless and faint, so they can’t be seen with the naked eye until developed. That’s why the best description is a fingerprint not visible to the naked eye—you need powders or chemical methods (like dusting, fuming, or reagents) to visualize them for analysis.

In contrast, a fingerprint that’s immediately visible is a patent or visible print, produced when the print is left in a substance such as blood or ink. Saying it’s a category of evidence is true in a broad sense but doesn’t describe the appearance or development of latent prints. A toolmark is a different type of evidence altogether, relating to impressions left by tools rather than the skin’s ridge patterns.