What is a life-cycle assessment, and how can it inform material selection?

• A. It focuses solely on end-of-life disposal.
• B. It evaluates environmental impact from material extraction to disposal; guides selecting durable, low-impact materials.
• C. It evaluates only production costs.
• D. It assesses only aesthetic qualities.

Answer: (B)

Life-cycle assessment looks at a material’s environmental footprint across every stage, from raw material extraction and processing through manufacture, transportation, use, and end-of-life disposal or reuse. By quantifying impacts at each step, it lets you compare materials not just on upfront cost or appearance but on total environmental burden. This helps you choose materials that minimize embodied energy, emissions, and resource use, while also considering durability, maintenance, and end-of-life options like recyclability or reuse. In practice, a life-cycle assessment guides selecting materials that will perform well over time with the smallest overall impact, rather than focusing on a single phase.