Which feature is listed as an alternate source of inflation for a buoyancy compensator?

• A. Alternate source of inflation (oral)
• B. Power inflator
• C. Over-pressure relief valve
• D. Jettisonable weights

Answer: (A)

Having an alternate way to inflate the buoyancy compensator is about maintaining buoyancy control even if the primary inflator fails. The oral inflation option lets you add air to the BC by mouth through the built-in inflator hose mouthpiece. This backup method is useful when you need to adjust buoyancy manually, such as at the surface or for careful, subtle changes underwater, without relying on the power inflator. The power inflator is the normal method for inflating; the over-pressure relief valve only vents excess air to prevent over-inflation; jettisonable weights are for shedding ballast, not for inflating the bladder.