What does a "Show up" involve in police procedures?

A "Show up" is a police identification procedure that involves presenting only one suspect to a victim or witness at the scene of a crime or shortly thereafter. This method is often used when the police have a suspect in custody who may be linked to the crime, and it's intended for quick identification. The goal is to determine whether the victim or witness can confidently identify the suspect as the perpetrator.

This approach can be advantageous because it allows law enforcement to act swiftly in confirming or eliminating a suspect before further legal processes ensue. Additionally, by showing only one individual, it removes the possibility of witness confusion that could arise if multiple suspects were presented at the same time, which might lead to misidentifications.

The other options describe different processes in police identification, such as lineups or photographic arrays, but they do not align with the specific procedures involved in a "Show up."