5. Which of the following explains a way in which metamorphic rocks are formed? a. through intense changes in heat
b. through intense change in pressure
c. through chemical changes
d. All of the above explain ways in which metamorphic rock can occur.

D. All of the above explain ways in which metamorphic rock can occur.

oxygen +1 most likely

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.