In the pipeline means being planned or prepared. 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: In the pipeline can refer to a situation involving being planned or prepared.
• Story example: A writer may use In the pipeline when describing a situation involving being planned or prepared.
• Exam example: When a sentence contains In the pipeline, choose the meaning “being planned or prepared.”