At Westonci.ca, we provide clear, reliable answers to all your questions. Join our vibrant community and get the solutions you need. Get the answers you need quickly and accurately from a dedicated community of experts on our Q&A platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

4. The ability of arches to support huge amounts of weight is due to improvements in
what?
A. the design of the arches only
B. the material of the arches only
C. neither the design nor the material of the arches
D. both the design and the material of the arches