Question

4.What will happen when diaphragm relaxes and curves upwards?
a. Air is forced out of the lungs
b. The rib case goes up and outwards
c. Volume of the thoracic cavity increases
d. Air pressure inside the thoracic cavity decreases​

Answer 1

B) the rib cage goes up and outward

Hope it helps

Answer 2

Hey friend here is your answer . . . .

a. air is forced out of the lungs