When preparing for a life raft inspection, what should be disconnected before boarding?

When preparing for a life raft inspection, disconnecting the lower LPU (Lifeboat Personal Unit) lobes is essential to ensure safety and facilitate a thorough inspection. The lower LPU lobes are part of the life raft's inflation system, and disconnecting them prevents accidental inflation or deployment during the inspection process. This step is critical for allowing inspectors to safely check all components of the life raft, including the fabric, hardware, and other safety features, without the risk of malfunction due to unintended inflation.

The other choices involve components that do not typically need to be disconnected for a standard life raft inspection or could potentially compromise the integrity and functionality of the raft if disconnected. Consequently, focusing on the proper disconnection of the lower LPU lobes allows for an effective inspection while prioritizing safety for those conducting the review.