What procedural requirement is necessary for a juvenile in custody?

The correct answer is that a juvenile in custody must have legal representation. This requirement is grounded in the legal rights afforded to juveniles, ensuring that they are protected during the legal process. Juveniles, like adults, have the right to consult with an attorney, who can provide guidance and protect their rights throughout the interrogation and trial process. This legal representation helps to ensure that the juvenile understands their rights, the charges against them, and the potential consequences of their actions.

While being handcuffed and searched may be an aspect of managing a juvenile in custody for safety reasons, it is not a procedural requirement specifically tied to the rights of juveniles. Providing a warning, allowing contact with parents, or other similar measures may be part of the procedures, but the provision of legal representation is crucial for ensuring that the juvenile's rights are upheld and that they receive fair treatment under the law.