The virus that causes acquired immune deficiency syndrome (AIDS) parasitize reduces

Options

A. B cells
B. cytotoxic T cells
C. helper T cells
D. All

Answer

### Step-by-Step Solution:

1. **Understanding the Virus**: The virus responsible for Acquired Immune Deficiency Syndrome (AIDS) is known as Human Immunodeficiency Virus (HIV).

2. **Mechanism of Action**: Once HIV enters the body, it primarily targets the immune system, specifically the CD4+ T cells (also known as T-helper cells).

3. **Impact on the Immune System**: HIV parasitizes these cells, which are crucial for the immune response. By infecting and destroying these cells, HIV reduces the body’s ability to fight off infections and diseases.

4. **Consequences of Infection**: As the infection progresses, the number of CD4+ T cells decreases, leading to a weakened immune system. This condition is what characterizes AIDS, where the body becomes vulnerable to opportunistic infections and certain cancers.

5. **Summary of Effects**: In summary, HIV reduces the immune system's functionality by targeting and destroying CD4+ T cells, leading to the development of AIDS.