An auto immune diseas is

Options

A. A.B-lymphocytes induced
B. B.Hemophilia
C. C.Myasthenia gravis
D. D.None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Autoimmune Diseases**: Begin by defining what an autoimmune disease is. An autoimmune disease occurs when the immune system mistakenly attacks the body's own cells, tissues, or organs. This can lead to various health issues depending on which part of the body is affected.

2. **Identifying Characteristics**: Recognize that the immune system's primary role is to protect the body from foreign invaders like bacteria and viruses. In autoimmune diseases, this function is misdirected, leading to self-attack.

3. **Examples of Autoimmune Diseases**: Familiarize yourself with some common autoimmune diseases. Examples include:
- Myasthenia Gravis
- Psoriasis
- Multiple Sclerosis
- Type 1 Diabetes

4. **Analyzing the Options**: Look at the options provided in the question:
- B lymphocytes induced (not a specific disease)
- Hemophilia (a genetic disorder, not autoimmune)
- Myasthenia Gravis (an autoimmune disease)
- None of the above

5. **Selecting the Correct Answer**: From the analysis, it is clear that Myasthenia Gravis is the only option that qualifies as an autoimmune disease. It is characterized by a defect in the transmission of nerve impulses to muscles, leading to muscle weakness due to antibodies blocking acetylcholine at the synapse.

6. **Conclusion**: Therefore, the correct answer to the question "An autoimmune disease is" is **Myasthenia Gravis**.

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