Final answer:
The traversal functions of Preorder, Inorder, and Postorder each visit nodes in a binary tree in distinct patterns, not in a linear sequential order. Thus, the potential answers listed in the question are misleading since each traversal follows its unique logic independently.
Step-by-step explanation:
The traversal functions in a binary tree define the order in which the nodes of the tree are visited. The following options represent different orders of the traversal functions:
- Preorder: In this traversal, the nodes are visited in the order of 'root-left-right.'
- Inorder: This traversal visits nodes in the 'left-root-right' order.
- Postorder: Here, nodes are visited in the order of 'left-right-root.'
The correct order in which these functions visit nodes is not sequential as suggested in the potential answers. Instead, each traversal function has its unique order for visiting nodes. Hence, the order given in the potential answers (a-d) is incorrect since they suggest a linear sequence which does not apply to any single traversal. Instead, each traversal should be understood and executed independently based on their individual node visitation logic outlined above.