Correct option is B
Rayon is not a modified starch; it is actually a semi-synthetic fiber made from cellulose, which is a natural polymer. Rayon is produced from wood pulp or cotton linters that undergo a chemical process to convert cellulose into fibers. Therefore, it is incorrect to associate rayon with starch modification. Instead, modified starches are typically used in food and industrial products for thickening or stabilizing purposes.
Insulin is a hormone produced by the pancreas, regulating glucose levels.
Rubber is a natural polymer derived from the latex of rubber trees.
Nitrocellulose is an explosive used in munitions and other industries.
