Boyles law can be used to explain part of the process by which air enters and leaves the lungs during breathing. which of the following statements are true? a. during exhalation, the diaphragm is raised, increasing the pressure in the lungs and resulting in air being forced out of the lungs. b. a decrease in volume results in an increase in pressure. c. during inhalation, the diaphragm is raised, increasing the pressure in the lungs and allowing air to flow into the lungs. d. when the diaphragm is lowered, volume decreases and pressure increases.