Which of the following cells is capable of engulfing foreign particles ?

Options

A. Monocytes
B. Basophils
C. Eosinophils
D. Neutrophils

Answer

To determine which of the following cells is capable of engulfing foreign particles, we need to understand the functions of various types of white blood cells (leukocytes) involved in the immune response.

### Step-by-Step Solution:

1. **Understanding Phagocytosis**:
- Phagocytosis is the process by which certain cells, known as phagocytes, engulf and digest foreign particles, bacteria, or dead cells. This is a crucial part of the immune response.

2. **Identifying the Cell Types**:
- The question likely refers to a few types of white blood cells, including monocytes, neutrophils, eosinophils, and basophils.

3. **Monocytes**:
- Monocytes are a type of white blood cell that can differentiate into macrophages and dendritic cells. Macrophages are known for their ability to perform phagocytosis effectively. Therefore, monocytes are capable of engulfing foreign particles.

4. **Neutrophils**:
- Neutrophils are another type of white blood cell that also play a significant role in the immune response. They are the most abundant type of white blood cells and can perform phagocytosis, but they are not the primary cells identified for this function in the context of the question.

5. **Eosinophils**:
- Eosinophils are primarily involved in combating parasitic infections and play a role in allergic reactions. They do not primarily function in phagocytosis.

6. **Basophils**:
- Basophils are involved in inflammatory responses and release histamine but do not engage in phagocytosis.

7. **Conclusion**:
- Among the options, monocytes are the cells that are capable of engulfing foreign particles through their differentiation into macrophages, which are the main phagocytic cells in the immune system.

### Final Answer:
The cell capable of engulfing foreign particles is **Monocytes**.