A 45-year-old adult presents for a sick visit, with the chief complaint of three-day history of low back pain. Clinical assessment is consistent with lumbar sacral strain. Which of the following represents the most appropriate next step in this person's care? A. Advised three days of bed rest on a firm surface. B. Apply ice or heat to the affected area based on clinical response.C. Refer to neurology for further advice. D. Order a lumbar sacral x ray to help confirm the diagnosis.---YouTube: ...