Step 1: Basic Principle
Glucose is an aldohexose. Reduction of the aldehyde group yields a sugar alcohol.
Step 2: Solution Procedure:
Glucose (\(C_6H_{12}O_6\)) has an aldehyde group. Reduction with NaBH\(_4\) reduces the aldehyde to a primary alcohol, forming the corresponding sugar alcohol. The product is D-glucitol, commonly known as sorbitol. Mannitol is obtained from the reduction of mannose, not glucose.
Step 3: Required Answer:
Reduction of glucose gives sorbitol, option (A).