Materials were chosen based on _____ and _____.

• A. cost and aesthetics
• B. speed and reliability
• C. technology and policy
• D. availability and climate

Answer: (D)

Material selection is driven by what you can actually obtain in the project location and how the material will perform in the local environment. Availability matters because you need a supply that can be sourced in the necessary quantities, within schedules, and at reasonable transport costs; if a material isn’t readily available, it can derail the project. Climate governs performance; different climates impose different demands—moisture, heat, cold, freeze-thaw, UV exposure, and humidity all influence durability, maintenance needs, and long-term behavior. Together, these two factors determine what is feasible and reliable in practice, often outweighing other considerations. While cost, aesthetics, technology, and policy are still relevant, they are secondary to whether a material can be sourced locally and will perform well under the climate conditions.