The president that instituted the "Vietnamization" policy was:Group of answer choicesEisenhowerKennedyJohnsonNixon

The president who instituted the "Vietnamization" policy was Richard Nixon.

Explanation:

1. Understanding Vietnamization: Vietnamization was a strategy aimed at reducing American involvement in the Vietnam War by transferring responsibility for the war effort to the South Vietnamese forces. This approach was meant to ensure that South Vietnam could maintain its independence without direct U.S. military intervention.

2. Context of the Policy: Introduced in 1969, this policy highlighted Nixon's commitment to withdraw U.S. troops while simultaneously increasing support for South Vietnamese forces through training and equipment. The goal was to allow for a "safe" withdrawal of U.S. troops while ensuring that South Vietnam could still defend itself against communist forces.

3. Presidential Timeline: Eisenhower initiated significant support and involvement in Vietnam; Kennedy escalated U.S. involvement through the early 1960s, primarily through military advisors. However, it was President Nixon who formally adopted and implemented Vietnamization as a key strategy during his administration.

In summary, the correct answer to the question is Nixon.