Question

after frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body?
heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration.
heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration.
strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.
strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.

Explanation:

During strenuous exercise, the body may rely on anaerobic respiration when oxygen supply is insufficient. This leads to lactate production. After exercise, the body needs to repay the oxygen debt (not carbon dioxide debt) by heavy breathing. Lactate is transported to the liver for further processing. Aerobic respiration does not produce a large amount of lactate in the context of continued heavy - breathing post - exercise. Also, there is no oxygen surplus in muscles transported to lungs in this scenario.

Answer:

Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.