Which of the following is a dissacharide :

Options

A. Glucose
B. Fructose
C. Sucrose
D. Galactose

Answer

To determine which of the following is a disaccharide, we need to understand what a disaccharide is and then analyze the given options.

### Step-by-Step Solution:

1. **Define Disaccharide**:
A disaccharide is a type of carbohydrate that consists of two monosaccharide units linked together. Common examples include sucrose, lactose, and maltose.

2. **Analyze the Options**:
- **Option 1: Glucose**:
- Glucose is a monosaccharide. Therefore, it cannot be a disaccharide.
- **Option 2: Fructose**:
- Fructose is also a monosaccharide. Hence, it is not a disaccharide.
- **Option 3: Sucrose**:
- Sucrose is a well-known disaccharide, commonly referred to as table sugar. It is composed of one glucose molecule and one fructose molecule.
- **Option 4: Galactose**:
- Galactose is another monosaccharide. Thus, it is not a disaccharide.

3. **Conclusion**:
Based on the analysis, the only option that qualifies as a disaccharide is **sucrose**.

### Final Answer:
The disaccharide among the given options is **sucrose**.

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