The correct answer is C, as Nixon's administration sought to reduce tensions with the Soviet Union, China and Latin America.
Along with Secretary of State Kissinger, Nixon redefined the role of the United States on the world stage. A gradual withdrawal of the 500,000 US soldiers fighting in South Vietnam was carried out, although the withdrawal lasted for four years. His greatest achievement was his approach and opening of relations with the People's Republic of China. He traveled to Moscow to negotiate the first step for an agreement on limiting strategic weapons. In the Middle East, it established relations with Egypt while maintaining its commitments with Israel.