What is placed on the underside of an inflatable life raft to help prevent it from being skidded by the wind or overturned?

Correct Answer: Option D — Ballast bags

Ballast bags are water-filled pockets attached to the underside of an inflatable liferaft. They provide essential stability by increasing the raft's underwater profile, which helps prevent the raft from capsizing in heavy seas and reduces the tendency of the raft to skid or drift rapidly due to wind.