Question

The body will not get oxygen if which system fails

Answer 1

Respiratory

Respiratory failure is a condition in which your blood doesn't have enough oxygen or has too much carbon dioxide. ... The oxygen passes into your blood, which carries it to your organs. Your organs, such as your heart and brain, need this oxygen-rich blood to work well.

Answer 2

Answer: The correct answer would be respiratory.

my reason for this answer is that I took the test myself.

see the image for proof.