To maintain the completeness of the tree, there is only one valid element to replace the ________, and that is the element stored in the last leaf in the tree.
A) root
B) internal node
C) leaf
D) tree

Question

Quizplus · Accepted Answer

In a complete binary tree, if you need to maintain the completeness of the tree while replacing an element, the only valid element to replace without disturbing the structure is the root. This is because replacing the root with the element stored in the last leaf allows for easy reorganization to maintain the tree's complete structure.

To Maintain the Completeness of the Tree, There Is Only