Answer;
B. The digestive system is responsible for monitoring the oxygen and carbon dioxide amounts in the blood and tissues.
Explanations;
Homeostasis involves the maintenance of a constant body environment.
The digestive system is not responsible for monitoring the amounts of oxygen and carbon dioxide in the blood and tissues. (It is the function of the breathing system together with the circulatory system).
Digestive system instead helps maintain homeostasis in a number of ways, For instance;
-By changing the pH from the saliva for example, which makes the gastric environment acidic which helps the break down of food readily and fast and also protect the body from bacteria.
