When calculating for a building's efficiency, which key performance metrics are considered?

The selection emphasizes metrics that are pivotal to assessing a building's efficiency, primarily focusing on environmental impact and resource management. Energy consumption, water usage, and material recycling are all crucial components of sustainability in building design and operations.

Energy consumption metrics evaluate how much energy a building uses, which is significant for identifying areas to improve efficiency and reduce operational costs. Water usage assesses the water resources required in the building's operation, indicating sustainability practices that can minimize waste. Material recycling reflects how well a building incorporates reclaimed materials or plans for deconstruction, enhancing its overall sustainability and reducing landfill contributions.

These metrics align closely with modern efficiency standards and sustainability practices, which prioritize reducing ecological footprints and utilizing resources responsibly throughout a building's lifecycle. In contrast, the other options relate more to economic or aesthetic considerations rather than sustainability and efficiency.