The infectious agent that triggers AIDS is called

A) cortisol.
B) the NK cell.
C) HIV.
D) the macrophage.

HIV

Human Immunodeficiency Virus (HIV) is a virus that attacks and weakens the immune system, leading to a progressive failure of immune response and increased susceptibility to infections and diseases.

AIDS

Acquired Immunodeficiency Syndrome, a life-threatening condition caused by the human immunodeficiency virus (HIV), leading to a severe weakening of the immune system.

Infectious Agent

A biological entity that can cause disease or illness to its host, such as bacteria, viruses, fungi, or parasites.