The correct answer to this open question is the following.
Although there are no options attached we can say the following.
No. The House Committee on Un-American Activities (HUAC) and senator McCarthywere not justified in investigating people who were suspected of being communists.
What Senator McCarthy basically did was to accuse many members of the United States federal government and the US military, but he never showed any valid evic¿dence that supported his accusations.
We are referring to Wisconsin Republican Senator Joseph McCarthy who accused many that many people of supporting Communist activities in the mid-1950s. McCarthy just accused people but never offer a serious argument or proof, so he ended up being a liar and his political career ended.
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).
He help to draft the constitution of 1824 and was a major influence in the addition of a general colonization provition.