Correct Answer: A
Explanation:
The goal of protein digestion is to create a pool of single amino acids from the proteins you consume in your diet, which the cells throughout your body can then use to make, for example, new muscle fibers, antibodies or hormones. When protein-rich foods reach your stomach, your acidic gastric juice unfolds the protein. Digestive enzymes in your stomach begin to clip the large protein chain into smaller units, which then move to your small intestine. Here, additional enzymes break off individual amino acids, and these end products of protein digestion get absorbed into your bloodstream and are ready to become incorporated into new protein molecules