What type of wall depends entirely on the underlying wall for its stability?

A veneer wall is a type of wall that relies completely on the underlying structure for its stability. It does not carry any significant weight other than its own and is attached to the load-bearing wall or structure behind it. The primary function of a veneer wall is to provide an aesthetic finish or weather barrier rather than to support structural loads. This makes it distinct from load-bearing walls, which are integral to the stability of a building as they support the weight of the floors and roof above. Structural walls and load-bearing walls serve to carry loads and contribute to the structural integrity of the building, while a veneer wall is designed purely for appearance and requires the support of the wall behind it to maintain its integrity and function. Therefore, the unique characteristic of a veneer wall being reliant solely on the underlying wall’s stability makes it the correct answer.