During containment and roll back phases military force most likely have been used.
C. containment and roll back
Step-by-step explanation:
Containment and Rollback are one of the most aggressive policies in U.S after world war 2 the forces are most likely to be used in the containment and rollback.
In containment the United States government would spread communism in areas of the world and also would have a cooperative attitude towards the Soviet Union.
Whereas in roll back the government has the power to overthrow communist regime in some states, means that the states will be governed by only one party.