What type of fingerprints are visible to the naked eye?

Visible fingerprints are those that are easily seen without the aid of any special equipment. They occur when a substance, such as ink, blood, or another pigment, is transferred onto a surface, leaving a clear impression of the fingerprint pattern. This transfer creates a contrast that makes the fingerprint easily identifiable to the naked eye.

The characteristics of visible fingerprints are particularly important during crime scene investigations because they can provide immediate leads without the need for further enhancement or processing. These prints are often found at a crime scene in various mediums that will clearly show the ridges and patterns of an individual's fingerprint.

In contrast, latent fingerprints are typically not visible to the naked eye and require special techniques to be revealed. Impressed or patent fingerprints refer to prints left in softer materials like wax or clay, and while they can also be visible, the term "visible fingerprints" specifically highlights those that are clear and easily seen against a contrasting background. Thus, visible fingerprints directly correlates to the scenario described, making it the correct answer.