Which one of the following pair is NOT correctly matched ?

The pair Rayon - Modified starch is NOT correctly matched. Rayon is a semi-synthetic fiber made from regenerated cellulose, which is typically derived from wood pulp or cotton linters. While starch and cellulose are both glucose-based polymers, they differ in their chemical linkages and industrial applications.

• Aspartame is a well-known synthetic (artificial) non-saccharide sweetener used as a sugar substitute in foods and beverages.
• Neoprene is the trade name for polychloroprene, a family of synthetic rubbers produced by the polymerization of chloroprene. It is highly resistant to heat and chemicals.
• Oxytocin is a peptide hormone and neurotransmitter produced in the hypothalamus and secreted by the posterior pituitary gland. It plays a critical role in labor, lactation, and social bonding.