Answer:
Mast Cells
Explanation:
Mast cells release histamine in the blood stream, when they detect a substance that triggers an allergic reaction, also called an allergen.
This might help,the presence of hydrochloric acid creates an acidic environment within the stomach that is needed to convert pepsinogen to pepsin. Mucus that is produced by the epithelial cells of the stomach help protect the lining of the stomach from the corrosive hydrochloric acid and pepsin.
Answer:
"Creating more paved surfaces"
Option C will be the answer
