How many inches of water will the MD1250 inflate automatically when submerged?

The MD1250 is designed to automatically inflate to a specified buoyancy level when submerged, ensuring that it provides adequate flotation support. The correct answer indicates that it inflates to a height of 4 inches of water. This level of inflation is crucial for the safety and efficacy of the device, as it ensures that the user will be properly supported while in the water. This height helps maintain stability and safety by creating a noticeable difference in water displacement, which is an important aspect of personal flotation devices (PFDs) and their operational efficiency.