Answer:
Options B and D
Explanation:
In animals, gaseous exchange takes place in the alveoli in the lungs. Generally, animals breath-out (exhale) carbon dioxide and breath-in (inhale) oxygen. Thus, carbon moves from the blood in the form of carbon dioxide into the alveoli in the lungs while the oxygen inhaled moves from the alveoli in the lungs to the blood where it is transported round the body as oxyhaemoglobin.
When your baby grunts, it usually means they're learning how to have a bowel movement. They haven't yet figured out how to relax the pelvic floor while also using abdominal pressure to move stool and gas through their system.
D because if you have already tried one treatment and it caused a infection you would need to change it
