The correct answer is A. Dean Rusk.
Explanation
Dean Rusk (1909 - 1994) was the Secretary of State of the United States, from 1961 to 1969, during the presidency of John F. Kennedy and Lyndon B. Johnson. In his stage as Secretary of State, he was characterized by his strong character, which is why he preferred the use of military forces to combat communism. During the Vietnam War, he promoted American military action. Therefore, the correct answer is A. Dean Rusk.
