If a person who has never been infected with the varicella-zoster virus comes in contact with a person who has shingles, they will come down with:

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.   

The answer is d because , safety almost always works, to prevent stds and pregnancy

What? are u trying to do a genetic test?