Which factor could limit the application of copper tubing?

The choice indicating temperature tolerance as a limiting factor for the application of copper tubing is relevant because copper does have specific temperature thresholds that can affect its usability in various environments. While copper is an excellent conductor of heat and electric current, it has limitations when exposed to very high temperatures, which can lead to structural weakening or failure. This is particularly important in applications where high temperatures are common, such as in certain industrial processes or in hot plumbing systems.

In contrast, other factors like corrosion resistance, costs, and availability might not pose as significant limitations in comparison to the mechanical properties and performance of copper at high temperatures. For instance, copper has good corrosion resistance in many environments, making it a favored material for plumbing and heating applications. Similarly, while cost can be a consideration, it is often weighed against the benefits of using copper, and availability in most areas typically supports its use in widespread applications. Hence, temperature tolerance stands out as a critical factor that could restrict the effectiveness and safety of copper tubing in specific scenarios.