Question

breathing. it contracts and relaxes to help us inhale and exhale.
what is the role of the diaphragm?
producing different sounds
assisting in digestion
helping us inhale and exhale

Explanation:

The text above the diagram explicitly states "It contracts and relaxes to help us inhale and exhale." This directly indicates the diaphragm's function. The other options (producing sounds, assisting digestion) are not mentioned in relation to the diaphragm in the provided context.

Answer:

Helping us inhale and exhale