Detailed Explanation:

Carbohydrates are broken down during digestion into their simplest absorbable form, glucose, which is a monosaccharide. All complex carbohydrates (polysaccharides like starch) and disaccharides (like maltose, sucrose) are ultimately degraded to glucose for cellular absorption and energy production.

Glycerol is derived from lipid metabolism, maltose is a disaccharide that further splits into two glucose molecules, and amino acids are the end products of protein digestion.

Therefore, glucose is the ultimate degradation product of carbohydrates, making Option 2 the correct answer.