The first node in a binary tree list is called the
A) head pointer
B) binary node
C) root node
D) pointer node
E) None of these

Question

Quizplus · Accepted Answer

In a binary tree, the first node is called the root node which serves as the starting point for traversing the tree. The head pointer is commonly used in linked lists, not in binary trees. A binary node is any node in a binary tree, not just the first one. Pointer node is not a commonly used term in binary trees. Therefore, C) root node is the best choice.

The First Node in a Binary Tree List Is Called