(4) building foundation rests upon a a. Vall b.tile drain c.girder difooting

The correct answer is a. wall.<br /><br />The foundation of a building is the structural component that transfers the weight of the building and its occupants to the ground. The foundation is typically built on a solid base, such as bedrock or compacted soil, and is designed to distribute the weight of the building evenly across the foundation.<br /><br />The foundation of a building is typically composed of several layers, including the footing, the foundation wall, and the foundation slab. The foundation wall is the vertical wall that forms the boundary between the foundation and the building above it. The foundation wall is typically made of concrete or masonry and is designed to provide stability and support to the building above it.<br /><br />The foundation wall is an essential component of the building foundation, as it provides the structural support for the building and helps to prevent the building from settling or shifting. The foundation wall is typically reinforced with steel rods or bars to provide additional strength and stability.<br /><br />In summary, the foundation wall is a crucial component of the building foundation, providing structural support and stability to the building above it.