NREMT guidelines emphasize that EMTs must be able to rapidly release any restraints applied to a patient in the event of airway compromise, vomiting, cardiac arrest, or sudden deterioration.

Option B is correct because exchanging handcuffs for EMS-controlled restraints ensures patient safety while maintaining custody. The EMT having the key allows immediate access if emergency care is required.

Option A is unsafe because the EMT does not have control over the restraints, potentially delaying lifesaving interventions.

Option C is incorrect because patient safety standards must always be met.

Option D is incorrect because transport is necessary for evaluation and care.

NREMT stresses that custody never supersedes patient safety, and EMS must maintain control of patient restraints during transport.