Correct answer.
Synthetic polymers are human-made polymers. From the utility point of view, they can be classified into four main categories: thermoplastics, thermosets, elastomers and synthetic fibres.
An elastomer is a polymer with viscoelasticity (having both viscosity and elasticity) and very weak intermolecular forces. For example, polychloroprene, neoprene, baypren, elastolefin, etc.