Which of the following best describes a non-unique identifier inquiry?

A non-unique identifier inquiry is characterized by the use of data that may not specifically identify a single individual due to its broad nature. When conducting a query based solely on physical descriptions without the inclusion of a name, it often results in multiple possible matches. This means that the information provided does not point to one unique individual, which is key to understanding what a non-unique identifier inquiry is.

Physical descriptions can include various characteristics such as height, weight, and hair color, which, although informative, are not sufficient on their own to narrow down to a single person. Thus, this type of inquiry fits the definition of a non-unique identifier, as it may yield multiple results that require further analysis to confirm the identity of the individual in question.