I believe it’s C sorry if I it’s wrong.
You already had the answer right? lol
Practicing good hygiene
Avoiding contact with vectors
Boosting your immune system with immunizationsPracticing good hygiene
Avoiding contact with vectors
Boosting your immune system with immunizations
Not making his/her status known to the person the transactional sex is conducted with.
Unprotected sex when indeed infected intensionally or unintensionally
hope it helps
Preferences is the correct one I looked it up