A damp squib means something expected to be exciting but turns out disappointing. This answer is correct because the expression has a fixed figurative meaning in English. In an SSC idiom question, students should match the whole phrase with its accepted meaning rather than translate each word separately.

• Classroom example: A damp squib can refer to a situation involving something expected to be exciting but turns out disappointing.
• Story example: A writer may use A damp squib when describing a situation involving something expected to be exciting but turns out disappointing.
• Exam example: When a sentence contains A damp squib, choose the meaning “something expected to be exciting but turns out disappointing.”