What aspect of national security pertains specifically to preventing terrorist attacks?

Homeland Security is the aspect of national security that specifically focuses on preventing terrorist attacks. This area encompasses a wide range of efforts aimed at protecting the United States from terrorist threats and attacks, including intelligence gathering, emergency response strategies, surveillance, and coordination among various federal, state, and local agencies. The Department of Homeland Security was established to enhance the nation’s ability to deter and respond to terrorist threats, integrate various safety measures, and promote resilience against such attacks.

The other choices, while they may share some overlap with the mission of preventing terrorism, are not as specifically focused. Public Safety encompasses a broader range of concerns related to the safety and protection of citizens from various hazards, including crime, natural disasters, and accidents. Defense Strategy more broadly relates to military planning and actions taken to defend the nation against foreign adversaries, which may not directly address the issue of terrorism at home. Civil Liberties refer to the personal freedoms and rights of individuals that are protected by law, which can be impacted by security measures but do not specifically target the prevention of terrorist activities.