The answer is C. The volume decreases. A scuba diver at the surface of the sea takes a deep breath and fills her lungs with 6 liters of air. The pressure in her lungs is 1 atm. She then dives down ten meters, without inhaling or exhaling, until the pressure of the air in her lungs is 2 atm. According to Boyle’s law, the air in her lungs decreases as she dives down. Boyle's Law is the gas law which states that in a closed space, pressure and volume are inversely related. As pressure increases, volume decreases, and vice versa.
