The binding of antibodies to the antigens to produce a large insoluble complex is known as

Options

A. antibody-antigen complex
B. agglutination
C. immunization
D. suppressor cell reaction

Explanation

To solve the question regarding the binding of antibodies to antigens to produce a large insoluble complex, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Antibodies and Antigens**:
- Antibodies are proteins produced by the immune system that specifically recognize and bind to antigens (foreign substances like bacteria or viruses).

2. **Formation of Antibody-Antigen Complex**:
- When antibodies bind to antigens, they form an antibody-antigen complex. This complex can sometimes be soluble, but in certain cases, it can lead to the formation of larger complexes.

3. **Definition of Agglutination**:
- The process where antibodies bind to multiple antigens, causing them to clump together and form a large insoluble complex is known as agglutination. This is a specific reaction where a particular antibody will only agglutinate with its corresponding antigen.

4. **Analyzing the Options**:
- **Antibody-Antigen Complex**: This term describes the result of the binding but does not define the process.
- **Agglutination**: This is the correct term for the process of forming large insoluble complexes.
- **Immunization**: This refers to the process of making an individual immune to a disease, typically through vaccination, and is not related to the binding of antibodies and antigens.
- **Suppressive Cell Reaction**: This involves T cells and is unrelated to the binding of antibodies and antigens.

5. **Conclusion**:
- Based on the definitions and analysis of the options, the correct answer to the question is **agglutination**.

### Final Answer:
The binding of antibodies to the antigens to produce a large insoluble complex is known as **agglutination**.