The correct answer is D) flame arrester. A flame arrester is a device used to prevent the passage of flames into enclosed spaces, such as the engine room or fuel tanks of a vessel. This is an important safety feature to prevent the spread of fire and explosions. The flame arrester works by dissipating the heat of the flame, preventing it from traveling through the device and into the enclosed space. The other answer choices are incorrect because they do not specifically refer to a device for preventing flame passage. A flame relief valve, safety valve, and flame stopper are not the correct terms for this specific safety equipment.