Q. A 32-year-old woman visits her primary care physician with complaints of a runny nose, sneezing, coughing, and sore throat for the past three days. She denies any fever or shortness of breath. Her vital signs are as follows: temperature 37°C, heart rate 90 beats/min, respiratory rate 18 breaths/min, and blood pressure 135/85 mm Hg. Which of the following is the most appropriate treatment option for this patient?