Why does a recursive descent parser sometimes require backtracking when analyzing human language?

A)To optimize memory allocation dynamically

B)To facilitate semantic interpretation immediately

C)Ambiguous grammars cause multiple derivations✓

D)Deterministic languages need no backtracking

💡 Explanation

Human languages often exhibit ambiguous syntax. A recursive descent parser explores possible derivations, and it backtracks upon encountering a dead end because ambiguous grammars can result in multiple possible derivation trees. Therefore, backtracking addresses syntactic ambiguity, rather than optimizing resources; simpler languages do not demand it.

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Why does a recursive descent parser sometimes require backtracking when analyzing human language?

💡 Explanation

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