Problem: Biofeedback facilitates skillful and efficient slow, deep, rhythmic diaphragmatic breathing and is a major intervention for clients with anxiety disorders, panic, post traumatic stress, phobias, acute stress, migraine headaches, hyperventilation, functional chest pain, functional nausea/vomiting, and asthma. Which of the following is true regarding breath patterns? Choose one answer. a. Breathing is a natural process which occurs with conscious control. b. Learning shallow breaths enhances health and a sense of well-being. c. Quieting the breath smooths emotions and mental processes and quiets the physiological state. d. The psychological and unconscious state is uninfluenced by breath quality.