To determine the height of the binary tree shown in the image:

• Height of a binary tree is defined as the number of edges on the longest path from the root node (A) to a leaf node (nodes without children).

Looking at the tree:

• The root node is $A$.
• The longest path from $A$ to a leaf can be traced through nodes $A \to D \to H \to L$, which has 3 edges.

Thus, the height of the tree is 3.

Would you like more details on how this is calculated or any further questions?

Here are 5 related questions to expand on this topic:

1. What is the depth of node $J$?
2. What is the difference between the depth and height of a node?
3. How do you calculate the total number of nodes in a binary tree?
4. Can a binary tree be perfectly balanced? What conditions must be met?
5. What is the time complexity of searching an element in a binary search tree?

Tip: The depth of a node is the number of edges from the root to that node, while the height is the number of edges from the node to the deepest leaf.