Sorbitol can be obtained by the reduction of:

Step-by-step solution

Sorbitol (also known as glucitol) is a six-carbon sugar alcohol formed by the reduction of the carbonyl group of certain monosaccharides. Reduction of glucose (an aldohexose) with reducing agents such as NaBH₄ or H₂/Ni converts its aldehyde group at C1 into a primary alcohol, yielding sorbitol. Reduction of fructose (a ketohexose) converts its ketone group at C2 into a secondary alcohol. This reduction creates a new chiral center, yielding a mixture of two epimeric sugar alcohols: sorbitol and mannitol. Reduction o