The within the executive branch shares terrorism responsibilities with the Department of Homeland Security.

The correct answer to your statement is the "Federal Bureau of Investigation (FBI)." The FBI operates under the Department of Justice and works closely with the Department of Homeland Security (DHS) in addressing terrorism-related issues, gathering intelligence, and ensuring national security.

The FBI's responsibilities include investigating terrorist threats, preventing attacks, and working with other federal, state, and local agencies to enhance cooperation and intelligence sharing. This collaboration is crucial for effectively combating terrorism and ensuring the safety of citizens.

Overall, the interplay between the FBI and DHS reflects a multi-agency approach to national security, highlighting the importance of coordination in addressing the complex nature of terrorism.