Which describes the stage of HIV infection that occurs when a persons immune system is severely weakened?

The stage of HIV infection when a person's immune system is severely weakened is known as Acquired Immunodeficiency Syndrome (AIDS). At this stage, the body becomes highly vulnerable to opportunistic infections and certain cancers due to the significant depletion of CD4 T cells, which are crucial for immune response. Individuals with AIDS often experience severe symptoms and complications, marking the late stage of HIV infection. Without proper treatment, this stage can lead to life-threatening conditions.