What does 'rubble' refer to?

'Rubble' specifically refers to the broken bits and pieces that remain after structures have been demolished, such as bricks, stones, and other debris. This term is commonly used in construction and demolition contexts to describe the chaotic remnants left behind following the destruction of buildings or other structures. It highlights the disordered and fragmented nature of the material, which contrasts sharply with newly built structures or completely intact artifacts that are undamaged and orderly. Unprocessed materials, while potentially in a raw state, do not carry the connotation of disrepair or destruction that 'rubble' does. Therefore, the definition capturing the essence of what 'rubble' entails is accurately represented by the chosen answer.