Complete the sentence to explain why trees represent hierarchy.
A tree structure has a single [1] node at the top.The root node is the topmost node in a tree, representing the start of the hierarchy.
Complete the sentence to describe child nodes in a tree.
Each node can have zero or more [1] nodes below it.
Child nodes are the nodes directly connected below a parent node, showing hierarchy levels.
Fix the error in the sentence about tree levels.
Nodes at the same [1] are called siblings.Nodes on the same level (depth) in a tree are siblings, sharing the same parent.
Fill both blanks to describe the hierarchical nature of trees.
A tree shows [1] relationships where each child has exactly one [2].
Trees model hierarchical relationships where each child node has exactly one parent node, showing clear levels.
Fill all three blanks to complete the explanation of tree structure.
In a tree, [1] nodes have children, [2] nodes have no children, and the top node is the [3].
Internal nodes have children, leaf nodes have none, and the root is the top node in a tree.