The answer is D, the standard course of action adopted by a business.
For the first one its NOW, I'm not sure about the 2nd, the 3rd I think is penal code cases but i could be wrong, and the 4th one sounds like voting is the most logical answer.
I believe the answer is Virtual Private Network (VPN).
Know this answer is late, but im doing my deed hoping i this can help someone else pass this darn class. Best of Luck to whoever is taking the same course. You can do it if my lazy self can do it! It'll be okay ;)