Basically, <u>two important changes were introduced to the definition of homeland security in 2010</u>. <u>First one</u> was about <em><u>Nation’s homeland security missions. </u></em>These missions are enterprise-wide, and not limited to the Department of Homeland Security. Federal Government, State, local, tribal, and territorial governments, the private sector, and other non-governmental organizations are responsible for executing these missions. The homeland security professionals must have a clear sense of what it takes to achieve this vision. <u>The second change</u> was about <em><u>three key and essential concepts for a comprehensive approach to homeland security: Security, Resilience and Customs and Exchange</u></em>.
I don't know you have to study this.
I would say A would be your best option
<span>Each level of government is divided into three branches: the legislative branch (which makes the laws), the executive branch (which carries out the laws), and the judicial branch (which applies the laws to specific court cases, determines whether someone has broken the law, and evaluates laws to make certain </span>
