Although Locke and Rousseau wrote prominent treatises on the social contract, Thomas Hobbes introduced the idea of it. He argued that human beings were evil in nature, and thus needed to enter a contract in which everyone basically agreed not to kill each other (i.e. in his natural state, although completely free, man would always be wary of subjected to another man's brutishness. Whereas in society we are all supposedly better off-even if there are sacrifices involved-because there is an agreement binding each man into behavior that's meant to contain man's evil nature).
The correct answer is: [A]: "nomadic" .
___________________________________________________
Concentration camps were more along the lines of camps that were used to hold and secure people, usually civilians, that were unwanted or suspicious to the country holding them. Many people like to attune it to just Jewish people in Nazi Germany, but concentration camps have been used by the US against Native Americans and Japanese people, they were also used by the Japanese during world war II as well as the Russians.
A Death camp is exactly what it sounds like, usually used only to eliminate evidence, humans, or unneeded Prisoners of War, traitors, or civilians. Most death camps that were recorded in history came from Nazi Germany and Japan during WWII.