When can a Nontestimonial Identification Order be conducted on a juvenile?

A Nontestimonial Identification Order (N.T.I.O.) can be conducted on a juvenile without a court order if the juvenile is charged as an adult, which aligns with the correct answer. The rationale behind this is that when a juvenile is charged as an adult, the legal proceedings and liberties typically afforded to minors are altered, allowing for different identification procedures.

The legal framework recognizes that juveniles charged with serious offenses can be treated under the adult justice system, resulting in broader allowances for police to gather evidence. This differs from younger or less serious cases, in which there are more restrictions that prioritize the juvenile's rights.

In contrast, other options were based on conditions that either impose additional hurdles or misunderstandings of the legal process for juveniles. Having permission from a guardian or requiring a finding of guilt would not align with the urgency of law enforcement needs in cases where public safety or evidence gathering is critical. Thus, the unique situation of a juvenile being charged as an adult provides the necessary legal ground for conducting a Nontestimonial Identification Order more freely.