Recognition and digestion by phagocytosis due to coated surface of antibodies is:

Options

A. Opsonization
B. Immunization
C. T-cell immunization
D. B-cell immunization

Answer

### Step-by-Step Solution

1. **Understanding the Question**: The question asks about the process of recognition and digestion by phagocytosis that is facilitated by the coated surface of antibodies.

2. **Identifying Key Terms**: The key terms in the question are "recognition," "digestion," "phagocytosis," and "coated surface of antibodies." These terms are essential for understanding the immune response.

3. **Defining Phagocytosis**: Phagocytosis is the process by which certain cells, known as phagocytes, engulf and digest foreign particles, such as bacteria or viruses.

4. **Role of Antibodies**: Antibodies are proteins produced by the immune system that bind to specific antigens (foreign particles). They play a crucial role in identifying and neutralizing pathogens.

5. **Understanding Opsonization**: Opsonization is a specific immune process where antibodies coat the surface of pathogens. This coating enhances the ability of phagocytes to recognize and engulf these pathogens.

6. **Linking Opsonization to Phagocytosis**: When antibodies coat a pathogen, they effectively mark it for destruction. This makes the pathogen more recognizable to phagocytes, leading to increased phagocytosis.

7. **Conclusion**: Based on the explanation, the correct answer to the question is **option 1: opsonization**. This process involves the coating of pathogens with antibodies, enhancing their recognition and digestion by phagocytes.