Given below are four sentences, out of which one sentence is grammatically correct. Choose the option which points out the grammatically correct sentence. If all sentences are incorrect. Choose ‘All sentences are incorrect’ as your answer.

Correct option is C

The correct answer is (C).

Here is why (C) is the winner and what makes the others incorrect:

• Sentence (A) Errors: * Adverb vs. Adjective: "Sounded" is a linking verb here, describing the melody itself. It should be modified by an adjective (beautiful) rather than an adverb (beautifully).
• Pronoun Logic: Much like the "eagle's claws" or "car's headlights," the subject is "The melody." The sentence says "they (the melody) drifted." A melody is singular. It should be "...as it drifted."
• Sentence (B) Error (Agreement): "The restaurant" is a singular collective noun. Therefore, it should be "...close its doors" instead of the plural "their."
• Sentence (C) is CORRECT: This correctly uses Negative Inversion ("Not only did the storm...") and maintains parallel structure with "but it also flooded."
• Sentence (D) Error (Idiom): As we saw in previous examples, you find an error or a loophole. "Found out" is typically used for discovering a hidden truth or secret.
• Correction: "The project manager found a significant error..."