Answered

What happens to the diaphragm when you exhale?
a. It swings.
b. It expands.
c. It contracts.
d. It moves up and down.

Sagot :

Ateeyeshaid
When you exhale , the diaphragm relaxes this means that it moves up and down.. so, it's letter D... it's not expanding because when you exhale the lungs is expanding..