What is the function of the pulmonary arteries?

The function of the pulmonary arteries is to transport deoxygenated blood from the right ventricle of the heart to the lungs. This is an essential part of the pulmonary circulation process. Once the blood travels to the lungs, carbon dioxide is exchanged for oxygen, and the blood becomes oxygenated.

This process is crucial for maintaining the oxygen supply for the body, as the lungs are responsible for oxygenating the blood. In contrast to the systemic circulation, where oxygenated blood is distributed to body tissues, the pulmonary arteries specifically handle the deoxygenated blood that needs to be purified in the lungs. Thus, the primary role of the pulmonary arteries is accurately depicted in the correct answer option.