Which of these actions take place during exhalation? O a. all of the above
O b. the breathing muscles relax
O c. the diaphragm rises
d. the lungs spring back to their original size

All of above because it need the breathing relax, diaphragm rises & lung springs!

En ese caso como estamos hablando de el caso tuyo pode
Os observar que así puede darse en veces

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.