Which traversal method visits the root node before its subtrees?
Difficulty: Medium
About this MCQ
This Medium Data Structures question asks: Which traversal method visits the root node before its subtrees? The correct choice is B. Preorder. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
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- A. Inorder
Why not A: “Inorder” does not fit this question. The answer is Preorder.
- B. Preorder ✓
- C. Postorder
Why not C: “Postorder” does not fit this question. The answer is Preorder.
- D. Level Order
Why not D: “Level Order” does not fit this question. The answer is Preorder.
Correct answer
B. Preorder
Explanation
Preorder is the term that matches “Which traversal method visits the root node before its subtrees” (option B). Option A (Inorder) does not fit this question. Option C (Postorder) does not fit this question. Option D (Level Order) does not fit this question. For this Data Structures question, the accepted answer is Preorder.
Source: Data Structures Reference Guide
Tags: data structures, trees, preorder
Submitted by: MCQsHub Editorial
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