The best and most correct answer among the choices provided by your question is the first choice or letter A which is "<span>McCarthyism."
</span>Inspired by the McCarthy hearings of the 1950s, Arthur Miller's play, The Crucible,<span> focuses on the inconsistencies of the Salem witch trials and the extreme behavior that can result from dark desires and hidden agendas.</span>
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The lowest caste is considered to be the B) Shudras. This caste is made up of individuals who work as semi-skilled or un-skilled workers. Also the "Dalits" or untouchables are considered the most ostracized caste of Indian society.