Which of the Following Correctly Describes the Process of Inspiration

Multiple Choice

Which of the following correctly describes the process of inspiration (air entering the lungs) ?

A) The lungs contract, causing their internal pressure to decrease.
B) The lungs expand, causing their internal pressure to decrease.
C) There is no change in the internal pressure in the lungs.
D) The lungs contract, causing their internal pressure to increase.
E) The lungs expand, causing their internal pressure to increase.