What is ensured by securing a detainee according to standard procedures?

Securing a detainee according to standard procedures is primarily about maintaining their rights throughout the process. This ensures that the detainee is treated in accordance with legal and ethical standards, which include respecting their right to due process, protection against inhumane treatment, and access to necessary legal support.

Maintaining rights is crucial in any detention scenario to ensure that the process is legitimate and that the individual's dignity is upheld. In many legal frameworks and human rights treaties, safeguarding a detainee’s rights also acts as a check against abuse of power and helps to maintain public trust in law enforcement and military operations.

The other options do not align with the core principles of detainee management under standard procedures: immediate release may not be a priority, confidentiality regarding location is not explicitly focused on, and interrogation is a process that must also respect the rights of the individual.