Which agencies are included in the Department of Homeland Security (DHS)?

The choice is correct because it accurately lists agencies that are part of the Department of Homeland Security (DHS). Customs and Border Protection (CBP) plays a critical role in protecting U.S. borders and facilitating lawful trade and travel. The Federal Emergency Management Agency (FEMA) is responsible for coordinating the federal government's response to natural disasters and emergencies. The U.S. Coast Guard (USCG) is a vital maritime security agency that enforces maritime laws and safeguards U.S. waters. The Transportation Security Administration (TSA) is charged with ensuring the security of the traveling public in the nation's transportation systems.

Recognizing these agencies as part of the DHS is essential for understanding the government's framework for national safety and emergency management. Other options present agencies that, while significant in their respective fields, do not fall under the DHS umbrella. For example, the Department of Defense and the Federal Bureau of Investigation primarily address military and civilian law enforcement issues, respectively, but they operate under different departmental structures.