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      Question

      Depth-First Search (DFS) typically uses which data

      structure implicitly or explicitly?
      A Queue Correct Answer Incorrect Answer
      B Hash Map Correct Answer Incorrect Answer
      C Stack Correct Answer Incorrect Answer
      D Linked List Correct Answer Incorrect Answer
      E Array Correct Answer Incorrect Answer

      Solution

      DFS explores as far as possible along each branch before backtracking. This "last-in, first-out" (LIFO) behavior is naturally handled by a stack (either explicitly implemented or implicitly through recursion, which uses the call stack).

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