Find the meaning of the given idiom A bolt from the blueAn unpleasant eventAn inexplicable eventA delayed eventAn unexpected event

The idiom "a bolt from the blue" refers to an unexpected event, particularly one that is surprising or shocking. The imagery suggests a sudden and unforeseen occurrence, much like a lightning bolt that strikes unexpectedly from a clear sky. When someone experiences a "bolt from the blue," they encounter something that they did not anticipate at all, often leading to significant emotional reactions.

Among the options provided:

• An unpleasant event: This is not necessarily true, as the unexpected event could be either positive or negative.
• An inexplicable event: While it may seem sudden, the emphasis is on the unexpected nature rather than being completely inexplicable.
• A delayed event: This does not align with the meaning of the idiom, as it implies something that has taken time to happen rather than occurring suddenly.
• An unexpected event: This is the correct meaning of the idiom.

Therefore, the answer is An unexpected event.