Which of the following antibody is related to allergic response?

Options

A. IgA
B. IgE
C. IgM
D. IgG

Answer

### Step-by-Step Solution:

1. **Understanding Allergy**:
- Allergy is defined as a hypersensitive response of the immune system to foreign substances known as allergens.

2. **Identifying Allergens**:
- Allergens can be various substances such as pollen, dust, certain foods, animal fur, and even sunlight.

3. **Recognizing Symptoms of Allergies**:
- Common symptoms include skin redness, eczema, asthma, and reddened eyes, which indicate the body's reaction to allergens.

4. **Understanding the Immune Response**:
- When exposed to allergens, the immune system produces specific antibodies. The key antibodies involved in allergic responses are Immunoglobulin E (IgE) and histamine.

5. **Identifying the Relevant Antibody**:
- Among the different types of antibodies (IgA, IgE, IgM, IgG), IgE is specifically associated with allergic reactions.

6. **Conclusion**:
- Therefore, the antibody that is related to allergic responses is **IgE**.

### Final Answer:
The antibody related to allergic response is **IgE**.

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