The notion of vietnamization called for troops and officials to step aside gradually during the course of the conflict.

I'm assuming that's a true/false question about American troops.  If so, that statement is TRUE.

Vietnamization was a strategy that would shift responsibility for fighting the Vietnam War to South Vietnamese troops.

Context/detail:

Richard Nixon came into office as President in January, 1969.  By that time the war in Vietnam involved hundreds of thousands of American troops and over 30,000 American lives had already been lost in the war. The war had become increasingly unpopular with the American people.  In November, 1969, President Nixon gave a speech which announced his Vietnamization policy, which  emphasized that the United States must empower South Vietnamese forces to assume more combat duties, gradually withdrawing American involvement.

By the time the US was shifting emphasis to this sort of policy, it was too late to stave off the victory of the North Vietnamese and Viet Cong forces.  The US eventually withdrew its forces from Vietnam in 1973, and by 1975, Saigon (in South Vietnam) fell to the North Vietnamese communist forces.

its american troops

Explanation:

the other person that answered also said it was american troops they just assumed it was t/f because there where no answer choices

b is the answer i am assuming