That's the answer right there
B. Protective Factors
I would say that the answer is B because when your life is in risk, you need someone with you to stay and make sure everything is okay.
I believe it is mellitus. Let me know if this helps!
Viruses depend on the host cells that they infect to reproduce. When found outside of host cells, viruses exist as a protein coat or capsid, sometimes enclosed within a membrane. The capsid encloses either DNA or RNA which codes for the virus elements.
