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In a parse tree, the root node always represents a ____ symbol

45. In a parse tree, the root node always represents a ____ symbol.

1. T (the final set of a terminal symbol)
2. V (the final set of a non-terminal symbol)
3. P (a set of production rules)
4. S (the start symbol)

Answer: D) S (the start symbol).

Explanation:

The root node is always a node that represents a start symbol.