Which of the following is an advantage of thermosetting plastics?

The advantage of thermosetting plastics lies in their high strength after curing. When thermosetting plastics are heated during the curing process, they undergo a chemical change that results in a rigid and durable structure. This transformation makes them excellent materials for applications that require high strength and stability at elevated temperatures, as they retain their shape and performance characteristics even when exposed to heat.

This strong final structure makes thermosetting plastics ideal for a variety of demanding applications, including electrical components, automobile parts, and even some household items like kitchenware. The increased durability of thermosetting plastics is a significant benefit in comparison to other types of plastics, specifically thermoplastics, which can soften and lose shape when reheated.

In contrast, other options are not characteristics of thermosetting plastics. They do not have the ability to be reformed with heat, nor are they typically considered low-cost in comparison to thermoplastics. Additionally, the ability to add color easily is more aligned with thermoplastics, which can often be easily dyed before or during the manufacturing process.