The correct answer is C. Interventionist.
A policy of interventionism revolves around the idea that a specific country (in this case the United States) gets involved in the political, economic, military, or social affairs of another country. The United States does this several times. Here are just a few examples of America's interventionist policy at work.
1) World War I
2) World War II
3) Korean War
4) Vietnam War
5) War on Terrorism
