The onset of AIDS occurs when there is: a very low number of helper T cells in the blood; option D
What is AIDS?
AIDS is a sexually transmitted infected which is caused by infection with the HIV virus. AIDS means acquired immune deficiency syndrome.
The HIV virus or human immunodeficiency virus is a retrovirus which attacks and destroys the immune system which then results in the symptoms of AIDS.
The helper T cells are responsible for fighting and destroying invading foreign pathogens in the body.
The HIV virus attacks and destroys the helper T cells. When the number of helper T cells in the body becomes very low, this marks the onset of AIDS.
In conclusion, the HIV virus destroys the helper T cells leading to AIDS.
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