Virus responsible for AIDS is

Options

A. HAV
B. HCV
C. HDV
D. HIV

Answer

To solve the question "Virus responsible for AIDS is," we will analyze the options provided: HAV, HCV, HDV, and HIV.

### Step-by-Step Solution:

1. **Identify the Options:**
- The options given are:
- HAV
- HCV
- HDV
- HIV

2. **Understand Each Abbreviation:**
- **HAV**: This stands for Hepatitis A Virus. It is associated with liver disease but not AIDS.
- **HCV**: This stands for Hepatitis C Virus. It also causes liver disease and is not related to AIDS.
- **HDV**: This stands for Hepatitis D Virus. Like HAV and HCV, it is related to liver disease and does not cause AIDS.
- **HIV**: This stands for Human Immunodeficiency Virus. It is the virus responsible for causing AIDS (Acquired Immunodeficiency Syndrome).

3. **Determine the Correct Answer:**
- Among the options, only HIV is known to cause AIDS. The other viruses (HAV, HCV, HDV) are all related to hepatitis and do not cause AIDS.

4. **Conclusion:**
- Therefore, the virus responsible for AIDS is **HIV**.

### Final Answer:
The virus responsible for AIDS is **HIV**.

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