Question

Which virus is responsible for causing AIDS?

• A. Hepatitis B virus.
• B. Human papillomavirus (HPV).
• C. Human immunodeficiency virus (HIV).
• D. Influenza virus.

Hint:

AIDS is caused by HIV, which weakens the immune system by reducing CD4+ T cells, leaving the body susceptible to infections and cancers.

Answer 1

The Correct Option is C

Step 1: Understanding AIDS.
AIDS (Acquired Immunodeficiency Syndrome) is caused by the Human Immunodeficiency Virus (HIV). HIV attacks the immune system, specifically targeting CD4+ T cells, leading to immunosuppression. Step 2: Explanation of other options.
Option (A): Incorrect. Hepatitis B virus causes liver infections, not AIDS. Option (B): Incorrect. Human papillomavirus (HPV) causes cervical cancer and other conditions, not AIDS. Option (D): Incorrect. Influenza virus causes flu, not AIDS. \[ \therefore \text{The correct answer is: Human immunodeficiency virus (HIV).} \]