The correct option is
C Angiotensin II
Inactive precursors of enzymes are known as proenzymes or zymogen granules. It undergoes a chemical change to get activated. Some examples are Trypsinogen, Pepsinogen, Procollagenase but Angiotensin II is not an proenzyme but it is a vasoconstrictor that regulates blood pressure.
So, the correct option is C.