Which of the following is an example of latent evidence?

Latent evidence refers to materials or traces that are not immediately visible or obvious and require some form of enhancement or development to be detected or analyzed. Fingerprints serve as a quintessential example because they are typically left unintentionally by individuals and are often not visible to the naked eye until they are developed using powders, chemicals, or alternative light sources.

In contrast, other options like the device itself, a DNA sample, and a cracked screen cover represent physical evidence that can be readily observed or collected without the need for further processing to reveal their existence. The device itself is a tangible item, the DNA sample is often collected directly for analysis, and the cracked screen cover can be seen and assessed without requiring any special techniques to visualize or develop the evidence.