1. pH of blood : (P)
2. Blood forms (W) % of the total body weight
3. Proteins form (Pr) % of plasma
4. The thickness of RBC : (R) micrometer The CORRECT arrangement of the above values is

Options

A. `WgtPgtPrgtR`
B. `WgtPrgtPgtR`
C. `RgtPgtPrgtW`
D. `WgtRgtPgtPr`

Answer

To solve the question, we need to arrange the given values in a correct order based on their numerical values. Let's break down each component step by step.

### Step 1: Identify the Values
1. **pH of blood (P)**: The normal pH range of blood is approximately **7.35 to 7.45**.
2. **Blood forms (W) % of total body weight**: Blood constitutes about **7 to 8%** of total body weight.
3. **Proteins form (Pr) % of plasma**: The percentage of proteins in plasma is about **6%**.
4. **Thickness of RBC (R)**: The thickness (or diameter) of a red blood cell (RBC) is approximately **2 micrometers** (or 0.002 mm).

### Step 2: Convert Values to Comparable Units
- For the pH, we can take the average value of **7.4** for simplicity.
- The percentage of blood in body weight can be considered as **8%** (the higher end).
- The percentage of proteins in plasma is **6%**.
- The thickness of RBC is **2 micrometers**.

### Step 3: Arrange the Values in Decreasing Order
Now, we will arrange the values from highest to lowest:
1. **Blood forms (W)**: **8%**
2. **pH of blood (P)**: **7.4**
3. **Proteins form (Pr)**: **6%**
4. **Thickness of RBC (R)**: **2 micrometers**

### Final Arrangement
The correct arrangement of the values based on their numerical significance is:
1. W (8%)
2. P (7.4)
3. Pr (6%)
4. R (2 micrometers)

### Conclusion
Thus, the correct order based on the values is: **W > P > Pr > R**.