Answer:
The correct answer is -
HIV viral load
HIV antibody levels
CD4 number
CD4:CD8 ratio
Step-by-step explanation:
The doctor wants to check the current condition of HIV and its effects on the body of John and how are the medicines are helping. So he must be checking the viral load which means how much virus present in the blood. The level of antibodies gives the idea of antibodies produced by the body in response to infection with HIV.
The levels of CD4 cells are assessed as they are affected by the HIV virus along with CD8 cells. Antibodies are not produced against CD4 cells. Antibodies are generally for diagnosis only.