Mark the odd one out

Options

A. Monocytes
B. Neurtrophils
C. Lymphocytes
D. Erythrocytes

Answer

To solve the question "Mark the odd one out," we need to analyze the given options and identify which one does not belong to the same category as the others.

### Step-by-Step Solution:

1. **Identify the Options**:
Let's assume the options are:
A) Monocytes
B) Neutrophils
C) Lymphocytes
D) Erythrocytes

2. **Classify the Options**:
- Monocytes, Neutrophils, and Lymphocytes are all types of white blood cells (WBCs).
- Erythrocytes, also known as red blood cells (RBCs), are responsible for carrying oxygen in the blood.

3. **Determine the Odd One Out**:
Since Monocytes, Neutrophils, and Lymphocytes are all WBCs, and Erythrocytes are RBCs, we can conclude that Erythrocytes is the odd one out.

4. **Final Conclusion**:
Therefore, the correct answer is option D) Erythrocytes, as it is the only one that is not a type of white blood cell.