Ground to a halt means stopped gradually or completely. 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: Ground to a halt can refer to a situation involving stopped gradually or completely.
• Story example: A writer may use Ground to a halt when describing a situation involving stopped gradually or completely.
• Exam example: When a sentence contains Ground to a halt, choose the meaning “stopped gradually or completely.”