Parasympathetic stimulation
a. causes chief cells to stop the production of h+ and cl-.
b. causes the gastric glands to increase production of gastric juice.
c. leads to a decrease in the secretion of gastrin.
d. causes a decrease in salivation.

b. causes the gastric glands to increase production of gastric juice

Explanation:

Parasympathetic stimulation is a function that is carried out by the Parasympathetic Nervous System which is a part of the Autonomic Nervous System.

Parasympathetic stimulation results in the process of digestion, production of saliva, production of urine, Production of tears, decrease in the heart rate and blood pressure.

Parasympathetic stimulation is involves in the process of digestion because after the injection of food , when the body is at rest, Parasympathetic stimulation increase the rate of the digestion process by, stimulating the gastric glands so that they can produce more gastric juice. This gastric juice contains enzymes and some other substances such as

a. Pepsin for the digestion of protein.

b. Renin

c. Hydrochloric acid (HCl) in other to deactivate any bacteria found food present in the stomach.

d. Mucus which helps to protect the lining of the digestive system.

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i believe the answer is c