Correct option is D
Idiom Meaning:
A sting in the tail refers to a final unpleasant or troubling part of something that initially seemed harmless or pleasant.
Correct Answer: (d) An unexpected, typically unpleasant or problematic end to something
Example Sentence:
The movie was going great, but the twist ending was a real sting in the tail.
Here are some idioms similar in meaning to "a sting in the tail" (something unpleasant hidden in something that seems good):
· A bitter pill to swallow – An unpleasant or painful reality.
· A wolf in sheep’s clothing – Something harmful disguised as harmless.
· The calm before the storm – A peaceful time before something bad happens.