Go astray means become lost or go in the wrong direction. 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: Go astray can refer to a situation involving become lost or go in the wrong direction.
• Story example: A writer may use Go astray when describing a situation involving become lost or go in the wrong direction.
• Exam example: When a sentence contains Go astray, choose the meaning “become lost or go in the wrong direction.”