Answer:
D) divide Vietnam into Cochin China, Annam, and Tonkin
Explanation:
He had the Vietnamization plan, a plan to train Vietnamese soldies.
Different from previous presidents, Nixon wanted no longer to fight communism, but yes to find a cooperative world order, including if needed, the division of Vietnam.
So the correct answer is:
D) divide Vietnam into Cochin China, Annam, and Tonkin