What material is stronger than fiber and can be used where conditions such as high temperatures would damage fiber?

The correct choice highlights the use of wire core materials, which possess significant advantages over fibers in certain extreme conditions. Wire core is made from metal or similar substances that exhibit high tensile strength and durability, making them suitable for applications requiring enhanced strength and resistance to deformation or wear under stress.

In scenarios with elevated temperatures, traditional fibers such as nylon, polyester, and natural fibers are at risk of degradation, melting, or losing structural integrity. Wire core, conversely, maintains its strength and performance even when subjected to high temperatures, making it ideal for applications such as rigging and mooring, where reliability is critical.

While nylon, polyester, and natural fiber have their own benefits and ideal use cases, they do not match the temperature resistance and strength characteristics of wire core materials. Therefore, in situations demanding robustness in high-heat environments, wire core stands out as the superior choice.