The correct answer is B) the September 11 attacks.
The option that best completes the diagram is "the September 11 attacks."
The diagram starts with "The Cold War is the major U.S. foreign policy priority." Then follows with "Terrorism becomes a major concern of U.S. foreign policy." and end up with "the September 11 attacks."
After the Cold War years, the United States Foreign policy has focused on terrorism. After the bomb in Oklahoma City that killed 168 in the Alfred P. Murrah Federal Building (April 19, 1995), the US government started the fight against terrorism. But it was not until the 9/11 attacks in 2001, that President George W. Bush created the Homeland Security Department to protect the country against terrorist attacks.
