Marta is infected with a sexually transmitted disease. diagnosis reveals that she is infected with the , which causes cervical cancer.

I believe the answer to your question is Human Papillomavirus (HPV).

Ithink the answer is 1. warmth

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.