Correct Answer:
B. 2
Correct answer: 2. In a binary tree, each node can have at most two children (left and right).
Background: The two children are called the left child and the right child.
- 1: A node can have up to two children, not just one.
- 3: Three children would make it a ternary tree.
- Unlimited: Unlimited children belong to a general tree.
Did you know? Binary search trees use this structure for fast searching.
Memory trick: Binary = 2.