Which of the following factors corresponds with opposing alignment?

The correct response is the option that highlights the dolicocephalic jaw structure as related to opposing alignment. In orthodontics, "opposing alignment" refers to the way the upper and lower teeth fit together during occlusion. A dolicocephalic jaw structure is characterized by a long and narrow shape, which can influence the way the teeth align in opposition. This skeletal morphology often leads to specific considerations in orthodontic treatment, as the length and width of the jaw can affect both the anterior and posterior occlusion.

In contrast, a broad apical base with small teeth may lead to crowding rather than an ideal alignment, while a stable intercanine width suggests an established relationship between the canines but does not directly address opposing alignment. Similarly, early establishment of basal arch width can influence arch form but may not have a direct connection to the alignment of opposing dental arches. Thus, the dolicocephalic structure's implications for tooth positioning and alignment make it an essential factor in understanding how jaws and teeth fit together in orthodontic evaluations.