What occurs during the digestion of protein?

Pepsin is the active protein-digesting enzyme of the stomach. Pepsin acts on protein molecules by breaking the peptide bonds that hold the molecules together. Digestion of protein is completed in the small intestine by the pancreatic enzymes trypsin, chymotrypsin, and carboxypeptidase.

The answer would be d. pili

Ascientist will use that to figure out how or why things are the certain way they are i hope this