A) the decision to overturn the results of a state election INCORRECT This option is incorrect because President Eisenhower's action in Little Rock was not related to an election. The situation involved the enforcement of a Supreme Court ruling on school desegregation, not the overturning of any electoral outcome. The president does not have the power to overturn state election results; such actions would violate the principles of federalism and the separation of powers. Eisenhower's decision was about upholding federal law, not interfering with the democratic process at the state level.
B) the decision to declare war on a foreign nation INCORRECT This option is incorrect because the speech and the action referred to were domestic, not foreign. Eisenhower did not declare war on any nation; he was responding to a domestic crisis of state resistance to federal court orders. The power to declare war is vested in Congress under Article I of the Constitution, and the president's role as Commander-in-Chief is to conduct war once declared. Eisenhower's use of troops was for domestic law enforcement, not for an international conflict.
C) the decision to enforce a judicial ruling CORRECT This option is correct because President Eisenhower's action to send federal troops to Little Rock was specifically to enforce the Supreme Court's ruling in Brown v. Board of Education. The Court had declared racial segregation in public schools unconstitutional, and when Arkansas resisted, Eisenhower used his executive authority to ensure compliance. This decision demonstrated the president's constitutional duty to enforce federal law and judicial orders, as outlined in the Take Care Clause. It was a landmark use of executive power to uphold civil rights and the rule of law.
D) the decision to desegregate the military INCORRECT This option is incorrect because the desegregation of the military was an earlier action taken by President Harry Truman in 1948 through Executive Order 9981. Eisenhower's action in 1957 was focused on school desegregation, not the military. While both actions were significant steps toward civil rights, they were distinct events with different contexts. The military desegregation was a policy change within the armed forces, whereas the Little Rock crisis involved enforcing a court ruling against state opposition.