The depth of a binary tree
A) is the length of the longest path from the root to a leaf
B) is the length of the shortest path from the root to a leaf
C) is the total number of leaves in the tree
D) is the depth of one of the subtrees plus one

Question

Quizplus · Accepted Answer

The depth of a binary tree is defined as the length of the longest path from the root to a leaf node. This means that it is the number of nodes on the longest path from the root node to any leaf node in the tree. Therefore, option A is correct. Option B is incorrect because it refers to the height of the tree, which is the length of the shortest path from the root to a leaf node. Option C is incorrect because it refers to the total number of leaves in the tree, which has nothing to do with the depth. Option D is incorrect because it is only true for a single subtree, not for the entire tree.

The Depth of a Binary Tree