In addition to replacing the president if necessary, it's the duty of the vice president to <span>preside over the Senate. The correct option among all the options that are given in the question is the third option or option "C". I hope that this is the answer that has actually come to your great help.</span>
Do you have the answer choices?
The first one, the second one, fourth one,
D. All of these choices are correct.
A is correct because Nixon tried to pull American troops from Vietnam though it took him awhile. B is correct because containment was one of the main factors of the Truman Doctrine. C is correct because Eisenhower was president during WWII when the country focused on military and economic strength.