What type of prints are formed from a substance like fatty foods that can be considered "tacky"?

The correct choice refers to plastic prints, which are created when a soft substance, such as fatty foods, is pressed into a surface. These prints capture the three-dimensional details of the object that made them, which allows them to be lifted or recovered from the surface.

When substances like fatty foods come into contact with a surface, they can leave behind a residual imprint that holds the shape and textures of the object. Plastic prints are often found in materials that retain imprints well, such as waxy surfaces or soft substrates.

The other options represent different types of prints but do not accurately describe the unique qualities of prints formed by sticky or tacky substances. Impressions generally refer to any mark left by pressure, while contaminated prints involve some foreign substance that obscures the identifying detail. Visible prints are those that can be seen without any enhancement, typically resulting from more conventional substances like ink or dust, rather than the unique tackiness associated with fatty materials.