Answer:
2.to walk a mile in 25 minutes within two weeks without getting out of breath
Explanation:
Chemical breakdown is affected by it I just did in zymes treated by the track and accessory organs as well as hydrochloric acid secreted by the stomach the G.I. tract is protected from the corrosive actions of these enzymes and acid by a mucous membrane composed of epithelial cells which secrete mucus and fluid
The answer your looking for is B that is what i think
