Which type of fingerprint does not require any processing to make it visible?

A plastic print is created when a finger makes an impression in a soft material, such as wax, clay, or some types of paint. These prints are three-dimensional and can be seen clearly without any additional processing. This characteristic distinguishes plastic prints from latent prints, which are formed by the natural oils and sweat from fingers but are invisible to the naked eye and require enhancement techniques to be made visible.

Fingerprint residue refers to the substances left behind by fingers but is generally synonymous with latent prints. This type typically needs processing to reveal its details. The option that suggests that all types of prints do not require processing is inaccurate because it implies that even non-visible prints like latent or residue are immediately visible, which is not the case.

Therefore, plastic prints stand out as they can be easily observed right away, making them unique in this context.