Identify the segment with the error.

Correct option is D

The error lies in option (d), which indicates that there is no error in the sentence.

Explanation:
• The sentence “Hardly had the meeting started when the fire alarm began to ring loudly” is grammatically correct.
• The correlative structure Hardly... when... is correctly used here.
• After “Hardly”, inversion is required, and the sentence correctly uses “had the meeting started”.
• The rest of the sentence is also properly structured and conveys a complete meaning.

Grammatical rule (English):
• With negative adverbial expressions like hardly, inversion is used.
• The standard pattern is: Hardly + had + subject + past participle + when + clause.

व्याकरण नियम (Hindi):
• Hardly जैसे negative adverbial expression के साथ inversion का प्रयोग होता है।
• सही संरचना होती है: Hardly + had + subject + verb की third form + when + clause।

Explanation of Other Options:
• (a): Correctly uses inverted structure after “Hardly”.
• (b): Correctly introduces the second event with “when”.
• (c): Correct verb phrase and adverb usage are used.

So the correct answer is (d)