Question

What happens during inhalation? A. The diaphragm and the rib cage return to their normal resting positions. B. The diaphragm contracts and moves down while the rib cage moves up and out. C. The diaphragm expands and moves up while the rib cage moves up and out. D. The diaphragm contracts and moves down while the rib cage moves down and in.

Answer 1

I don´t know is all is on k-12 but the correct awnser on k-12 is The diaphragm pushes up and the ribs move in and down.

Step-by-step explanation:

I took the test

Answer 2

the answer would be B