Select the most appropriate idiom/phrase that can substitute the underlined segment in the given sentence.
This incident occurred without a warning.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Bolt from the blue.
Bolt from the blue refers to something unexpected and surprising, usually a sudden event or news that happens without any warning or indication beforehand.
This idiom fits perfectly in the context of the sentence, indicating an incident that occurred suddenly and unexpectedly, just like a bolt of lightning from a clear blue sky.
Therefore, "Bolt from the blue" is the idiom that best captures the meaning of an unexpected event occurring without warning.