What can protect against the contraction of hiv?
a. avoid contact with blood and other bodily fluids.
b. disinfect surfaces often.
c. visit the doctor for regular check-ups.
d. wash your hands for at least 20 minutes

A. Avoid contact with blood and other bodily fluids.

Hope this helps!

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.   

Imma gonna say go with the very first answer (: