What are the handcuffing principles to be followed?

The principles of handcuffing outlined in the correct choice emphasize a systematic approach to ensure the safety of both the officer and the detained individual.

The process begins with "Apply," which involves securely placing the handcuffs on the subject's wrists while maintaining control over the situation. Following the application, "Adjust" ensures that the handcuffs are not too tight, allowing for the safety and comfort of the individual, as well as maintaining proper functionality of the restraints. Next, "Double Lock" is a critical step that prevents the handcuffs from tightening further, which can occur due to the individual's movements. This safety measure is crucial in preventing injury and ensuring the subject's comfort. Finally, "Check" requires the officer to verify that the handcuffs are applied correctly and securely. This includes ensuring that the individual cannot slip out, which is essential for preventing escape and maintaining officer safety.

Together, these principles create a comprehensive protocol that enhances safety and effectiveness in the handcuffing process.