Answer:
The correct answer is option D - "Subcutaneous emphysema".
Explanation:
Subcutaneous emphysema is a medical condition that occurs when gas or air travels under the skin. Subcutaneous emphysema is most frequent present in the chest wall or the neck area. The symptoms that indicate a subcutaneous emphysema in the neck area include swelling with a crackling sensation upon touching the swollen area. Other symptoms of this condition are sore throat, neck pain and difficulty of swallowing.
