Final answer:
Transposition of the great vessels is a condition where the aorta and pulmonary artery arise from the incorrect ventricles, which disrupts normal blood circulation.
Step-by-step explanation:
The subject of the question is Transposition of the great vessels, a congenital heart defect. In a normal heart, the aorta arises from the left ventricle and carries oxygen-rich blood to the body, while the pulmonary artery arises from the right ventricle and carries oxygen-depleted blood to the lungs. Transposition occurs when these arteries arise from the incorrect ventricles: the aorta from the right ventricle (option b) and the pulmonary artery from the left ventricle (option c).