What part of the heart is primarily evaluated using V1 and V2 leads?

The V1 and V2 leads in an electrocardiogram are specifically positioned to provide a clear view of the anterior wall of the heart, particularly focusing on the interventricular septum. The primary purpose of these leads is to assess electrical activity in this region, making them essential for identifying conditions such as septal myocardial infarctions or other abnormalities affecting the septum.

These leads are located in the fourth intercostal space at the right and left sternal borders, respectively. Their physical placement allows for optimal monitoring of the electrical signals that pass through the septal structure, which separates the left and right ventricles. Therefore, when evaluating the heart's overall function and detecting potential issues, V1 and V2 are vital in focusing on the septum, making this the correct answer.