Aclient with chronic pain uses a machine to monitor his physiologic responses to pain. the unit transforms the data into a visual display and through seeing the pain responses, the client is taught to regulate his physiologic response and control pain through relaxation, imagery, or breathing exercises. this technique for pain control is known as: ) therapeutic touch (tt).b) transcutaneous electrical nerve stimulation (tens).c) biofeedback. d) hypnosis.

Biofeedback.

Explanation:

Different receptors present on the body that can detect the pain stimuli and initiates different response in the body. The different techniques that are used for the pain relief are biofeedback, yoga and cold.

Biofeedback technique of pain relieving uses the machine to monitor and regulate the psychologic response by using electrode sensor on the patient's body. The unit can be transformed the data into the visual form, displayed and can see the pain response. The physiologic response of the body is increased and pain can be controlled by breathing exercises and relaxation.

Thus, the correct answer is option (C).