What is the advantage of using a variation of a binary search tree, such as a 2-3 tree or a 2-3-4 tree, instead of a binary search tree?

What will be an ideal response?

In a binary search tree, insertions and deletions can cause the tree to lose its balance and approach a linear shape. Such a tree is no more efficient than a linked list. Variations of binary search trees can absorb insertion and deletions without a deterioration of their balance.