Which statement about HIV is true?

• A. It is a virus that attacks and weakens the immune system.
• B. It is a bacteria that causes digestive issues.
• C. It is a fungus that grows on the skin.
• D. It is a genetic trait with no health impact.

Answer: (A)

This question tests your understanding of what HIV is and how it affects the body. HIV is a virus that attacks the immune system, specifically targeting CD4 T cells. When these cells are damaged or reduced, the body's ability to fight infections weakens, which is why HIV can lead to serious illnesses if not treated. With modern treatment, antiretroviral therapy can control the virus, helping people live long, healthy lives and preventing progression to AIDS. The other descriptions describe a bacteria, a fungus, or a genetic trait—and those do not describe HIV, which is indeed a virus.