Formation of antibodies is the function of

Options

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

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the formation of antibodies and which type of cell is responsible for this function.

2. **Analyzing the Options**:
- **Monocytes**: These are a type of white blood cell (WBC) that are a part of the immune system. They do not produce antibodies; instead, they are involved in phagocytosis, which is the process of engulfing and digesting foreign particles.
- **Neutrophils**: These are also WBCs and are classified as granulocytes. Like monocytes, they play a significant role in phagocytosis and are not responsible for antibody production.
- **Basophils**: These are another type of granulocyte involved in inflammatory and allergic reactions. They release histamine but do not produce antibodies.
- **Lymphocytes**: This group includes T cells and B cells. B cells are specifically responsible for the production of antibodies, which are crucial for the humoral immune response.

3. **Identifying the Correct Option**: Since the question specifically asks about the formation of antibodies, the correct answer is lymphocytes, particularly B cells, which differentiate into plasma cells that secrete antibodies.

4. **Conclusion**: The formation of antibodies is primarily the function of **lymphocytes**, specifically **B cells**.

### Final Answer:
The formation of antibodies is the function of **lymphocytes** (specifically B cells).

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