question: Q:A 36-year-old man presents to his physician with the complaint of bilateral lower back pain. The pain is 5/10, constant, aching, aggravated by bending forward and lying supine, and is alleviated by resting in a neutral position. The pain appeared 3 days ago after the patient overstrained at the gym. He does not report changes in sensation or limb weakness. The patient works as a business analyst. The patient’s weight is 88 kg (194 lb), and the height is 186 cm (6 ft 1 in). The vital signs are within normal limits. The neurological examination shows equally normal lower limb reflexes, and preserved muscle tone and power. The paravertebral palpation of the lumbar region increases the pain. Which of the following non-pharmacological interventions is the most appropriate in the presented case?? 
  {'A': 'Bed rest for 3 days', 'B': 'Manual traction', 'C': 'Maintaining usual activity as tolerated', 'D': 'Therapeutic ultrasonography', 'E': 'Electromyographic biofeedback'},