In a tree structure, each item can have only one parent, meaning it has a single item above it.
This parent-child relationship creates a hierarchical structure where each item (except the root) has one predecessor (parent) and potentially multiple successors (children).
Imagine a family tree: you, as a person, have only one set of biological parents. Similarly, in a tree data structure, items connect in a way that mirrors this familial structure, promoting clear organization.
The root of the tree, analogous to the oldest ancestors in a family tree, has no parent, distinguishing it as the starting point of the hierarchy.