Final answer:
Polysulfides, silicones, and polyurethanes are all examples of polymers, which are long chains of repeating molecular units used in many industries.option(1).
Step-by-step explanation:
Polysulfides, silicones, and polyurethanes are examples of polymers. These substances are synthetic compounds that consist of long chains of repeating molecular units. Silicones, also known as polysiloxanes, are a unique type of polymers that have an inorganic silicon-oxygen backbone with organic side groups. Polyurethanes (PUR and PU) are composed of organic units joined by carbamate links and are part of a broader class of reaction polymers. Polymers such as these are used in a vast array of products, from toothbrushes to computer cases, and are integral to numerous industries.