Select the most appropriate meaning of the given idiom.

A bolt from the blue

The correct answer is Option 3.

Key Points

• The idiom 'A bolt from the blue' means something unexpected, surprising, or shocking.(आकस्मिक घटना)
  • Example - The resignation of the chairman came like a bolt from the blue.
• Hence, we can infer that the meaning of the idiom 'A bolt from the blue' is 'A sudden and unexpected event'.

Therefore, the correct answer is A sudden and unexpected event. 

Additional Information Here are the options explained along with their example sentences.

• Raining heavily - 'Raining cats and dogs' is the idiom used for raining heavily.
  • Example - It was raining cats and dogs, so I couldn't walk to the store.
    
• Thunder and rain in a storm - There isn't a specific idiom for 'thunder and rain in a storm'.
  • Example - We had to cancel our outdoor picnic due to the thunder and rain in the storm.
    
• A spontaneous but expected event - There isn't a specific idiom for 'a spontaneous but expected event'.
  • Example - The sudden burst of applause from the audience was a spontaneous but expected event after the singer's incredible performance.