A is correct
In the close-out phase, the focus is on completing the program and ensuring that all aspects are properly transitioned and documented. Managing the transition from the "As-Is" state to the "To-Be" or Target State is more relevant to the execution phase rather than the close-out phase. Therefore, the procedure that should be removed is:
A. Managing the transition from the "As-Is" state to the "To-Be" or Target State.
This procedure is part of the implementation and execution process, where the actual transition from the current state to the desired future state takes place. In the close-out phase, the emphasis is on reviewing benefits, transitioning to operations, and documenting lessons learned.