To identify a pair of vertical angles, we need to understand what vertical angles are. Vertical angles are a pair of non-adjacent angles formed by two intersecting lines. These angles are opposite each other, and they share a vertex.
Looking at the figure you provided, we see two intersecting lines with several angles labeled. To determine the pair of vertical angles, we need to find two angles that are opposite each other and share a common vertex.
Analyzing the figure, we can see that angles 2 and 6 are opposite each other and share the vertex at the intersection of the two lines. Therefore, the correct answer would be B) 2 and 6.