Natural and synthetic compounds of exceptionally high molecular weight consisting of repeated linked units are called:

The correct answer is polymers. Polymers are large molecules composed of repeating structural units known as monomers, which are connected by covalent chemical bonds. These repeating units give polymers their unique properties, making them versatile materials used in a wide variety of applications, from everyday plastics to advanced materials in technology and medicine.

In contrast to other options, monomers are the basic building blocks of polymers but are not high molecular weight compounds themselves. Curing agents refer to substances that facilitate the hardening or cure of materials, often used in conjunction with polymers but are not defined by their structure. Laminators are devices or processes used to bond or layer materials together, which is unrelated to the definition of high molecular weight compounds. Understanding the significance of polymers is essential, as they play a crucial role in the formulation of products encountered in the beauty and cosmetology industry, such as nail enhancements and gels.