THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The correct answer is option (C) i.e, Renin.

Detailed explanation-2: -Trypsin: It is a protease of the digestive system produced in the pancreas as an inactive precursor trypsinogen. It is then secreted into the small intestine, where enterokinase proteolytic cleavage activates trypsin.

Detailed explanation-3: -Trypsin is secreted by the pancreas as trypsinogen, is activated by enterokinase in the duodenum, and hydrolyzes protein molecules to peptides and amino acids. Trypsin is an optimal marker for detecting changes in the physiological state of the pancreas because it is specific for this organ.