The United States Department of Homeland Security's main task is to maintain the safety of all US citizens. It also plays a role in preventing terrorism both domestically and by collaborating internationally. The focus of DHS is primarily on the security and protection of individuals within the US borders. ;
The primary task of the United States Department of Homeland Security (DHS) is to maintain the safety of all US citizens. Established after the 9/11 attacks, it addresses various threats including terrorism, natural disasters, and cybersecurity. Therefore, the correct answer is C.
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