Which of the following protein destory the antigen, when it enter in Body cell.

Options

A. Insulin
B. Antibodies
C. Chromo protein
D. Phaspno proteine

Explanation

To determine which protein destroys the antigen when it enters the body cell, we can analyze the options provided:

1. **Insulin**: This is a hormone that regulates glucose levels in the blood. It does not have a role in destroying antigens.

2. **Antibodies**: These are specialized proteins produced by the immune system. They recognize and bind to specific antigens (foreign substances) that enter the body. Once bound, antibodies can neutralize the antigens or mark them for destruction by other immune cells.

3. **Chromoprotein**: This is a type of protein that contains a pigmented prosthetic group. Chromoproteins are not primarily involved in the immune response or in destroying antigens.

4. **Phosphoprotein**: These proteins have phosphate groups attached and play various roles in biological processes, but they are not specifically involved in the destruction of antigens.

Based on this analysis, the correct answer is **antibodies**. They are the proteins that specifically target and destroy antigens when they enter the body.

### Step-by-Step Solution:
1. **Identify the Proteins**: Review the options provided: insulin, antibodies, chromoprotein, and phosphoprotein.
2. **Understand the Role of Each Protein**:
- Insulin regulates blood sugar, not involved in immune response.
- Antibodies are immune proteins that bind to and neutralize antigens.
- Chromoproteins and phosphoproteins do not play a direct role in antigen destruction.
3. **Conclude**: Since antibodies are specifically designed to combat antigens, they are the proteins that destroy antigens when they enter the body.

### Final Answer:
The protein that destroys the antigen when it enters the body cell is **antibodies**.