Final answer:
Diagonal bracing, knee bracing, and shear walls are considered forms of lateral bracing in a post and beam system, while roof trusses primarily provide support for the roof but are not considered lateral bracing.
Step-by-step explanation:
Lateral bracing is used to provide stability and prevent the deformation of a structure. In a post and beam system, diagonal bracing, knee bracing, and shear walls are considered forms of lateral bracing. They help transfer the loads and forces acting on a structure, reducing the chances of failure or collapse.
Roof trusses, however, are not typically considered to be lateral bracing for a post and beam system. Roof trusses primarily provide support for the roof and help distribute the weight evenly. While they do contribute to the overall stability of the structure, they are not directly involved in providing lateral bracing.