During absorption of carbohydrates in the blood the most rapidly transported monosaccharide is

Options

A. (a) glucose
B. (b) galactose
C. (c) fructose
D. (d) sucrose.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which monosaccharide is absorbed most rapidly into the blood during carbohydrate digestion.

2. **Identify the Options**: The options provided are:
- A) Glucose
- B) Galactose
- C) Fructose
- D) Sucrose

3. **Absorption Mechanisms**:
- **Active Transport**: Glucose and galactose are absorbed via active transport, which requires energy (ATP) and involves sodium pumps in the cell membrane.
- **Facilitated Diffusion**: Fructose is absorbed through facilitated diffusion, which is a slower process that does not require energy but involves transport proteins.

4. **Evaluating Each Option**:
- **Glucose and Galactose**: Both are absorbed through active transport, making them faster than fructose.
- **Fructose**: Since it is absorbed via facilitated diffusion, it is not the fastest option.
- **Sucrose**: This is a disaccharide, not a monosaccharide, so it cannot be the answer.

5. **Comparing Glucose and Galactose**: While both glucose and galactose are absorbed rapidly, galactose is noted to be absorbed more quickly than glucose due to its specific transport mechanisms.

6. **Conclusion**: The most rapidly transported monosaccharide during carbohydrate absorption is **Galactose** (Option B).

### Final Answer:
**Option B: Galactose**

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