Final answer:
The PCT should secure the belt just above the patient's hips when using a gait belt to ambulate a patient.
Step-by-step explanation:
The PCT should use the technique of securing the belt just above the patient's hips when using a gait belt to ambulate a patient. This technique ensures that the belt is positioned properly to provide support and stability to the patient during walking. Holding the belt firmly around the patient's neck (Option A) is incorrect and can cause discomfort or injury to the patient. Applying the belt snugly around the patient's chest (Option B) may restrict breathing and movement. Using the belt only for patients who can walk independently (Option D) limits the potential benefits of using a gait belt.