Every morning, Stormy enjoys going for her morning run before work.
Which of the following choices indicate why Stormy’s breathing rate is likely higher during her morning run?
During her morning run, her muscles work harder, decreasing the demand for oxygen. More oxygen is picked up in the
lungs for delivery to the working muscles, causing her lungs to work slower.
During her morning run, her muscles work harder, increasing the oxygen demand. More oxygen is picked up in the lungs
for delivery to the working muscles, causing her lungs to work harder.
During her morning run, her muscles are tired, slowing the oxygen demand. Less oxygen is picked up from the blood to
be delivered to the working muscles resulting in a faster breathing rate.
During her morning run, her muscles are tired, causing the oxygen demand to decrease. More oxygen is picked up from
the blood to be delivered to the working muscles resulting in a faster breathing rate.