Final answer:
Option B. The best ECG lead to detect occlusion of the right coronary artery is Lead II, due to its orientation and the areas of the heart it monitors.
Step-by-step explanation:
The lead that BEST detects occlusion of the right coronary artery on an ECG is lead II. Lead II measures the electrical activity between the right arm and the left leg. It provides a view of the inferior surface of the heart, where the right coronary artery supplies blood to. Thus, any changes in the electrical activity in lead II can indicate an occlusion of the right coronary artery.
The ECG lead that would best detect occlusion of the right coronary artery is Lead II. Lead II is created by placing electrodes on the right arm and the left leg and is particularly informative for examining the function of the heart muscle. It is also coordinated with arterial blood pressure, and changes or abnormalities in this lead may indicate issues with the areas of the heart typically supplied by the right coronary artery, such as certain areas of the right atrium and ventricle, and the inferior part of the left ventricle.