Which item is not part of an exterior frame wall?

Bridging is often used to provide additional support between studs in a wall assembly, primarily to prevent them from twisting or buckling. However, it is not part of the structural framework of the exterior wall itself. The main components of an exterior frame wall include studs, which serve as vertical supports; sheathing, which provides a surface for applying exterior finishes and adds structural integrity; and sill plates, which anchor the wall to the foundation.

Since bridging does not contribute to the main structural elements or the exterior surface of the wall, it is correct to identify it as not being part of the exterior frame wall assembly in the context of this question. Understanding the role of each component in wall construction helps clarify how they work together to form a sturdy and properly functioning building envelope.