Blood plasma is

Options

A. Alkaline
B. Acidic
C. Neutral
D. None of these.

Answer

### Step-by-Step Solution:

1. **Understanding Blood Plasma**: Blood plasma is the liquid component of blood that remains after the cellular components (RBCs, WBCs, and platelets) have been removed. It is a straw-colored liquid.

2. **Composition of Blood Plasma**: Plasma is the largest component of blood, making up about 55% of its total volume. It consists mainly of water, salts, enzymes, antibodies, and various proteins.

3. **pH of Blood Plasma**: The pH of blood plasma is an important characteristic. The normal pH range for blood plasma is between 7.32 and 7.42.

4. **Determining the Nature of Blood Plasma**: To classify the nature of blood plasma, we need to analyze its pH:
- A pH of 7.0 is considered neutral.
- A pH below 7.0 indicates acidity.
- A pH above 7.0 indicates alkalinity.

5. **Conclusion**: Since the pH of blood plasma (7.32 to 7.42) is above 7.0, we can conclude that blood plasma is alkaline in nature.

6. **Final Answer**: Therefore, the correct answer is that blood plasma is **alkaline**.