Question: During a routine diagnostic imaging procedure, a radiologist notices an anomalous arterial branch originating from the thoracic aorta. The branch appears to supply blood to the lungs, in addition to the usual pulmonary circuit. Which of the following arterial branches of the thoracic aorta is most likely responsible for this observation? Need Assignment Help? Select one: a. Intercostal artery b. Pericardial artery c. Mediastinal artery d. Bronchial artery