Final answer:
The CSM and key NCOs revise supporting tasks in a military unit for training and readiness. These tasks are crucial for the unit's ability to perform its duties effectively and respond to different situations.
Step-by-step explanation:
The CSM (Command Sergeant Major) and key NCOs (Non-Commissioned Officers) within a military unit review and refine the supporting tasks specifically for c) Training and readiness. These two aspects are critical for ensuring that the unit is prepared to perform its duties effectively and can respond to various situations they may encounter.
Training encompasses the development of skills and knowledge necessary for military operations while readiness refers to the state of being fully prepared for those operations.