Renin
ADH
Aldosterone
Atrial Natriuretic Factor
ANF is atrial natriuretic factor causes vasodilation and leads to a decrease of blood pressure. The increase in the blood flow to the atria of the heart causes the release of ANF. It is mainly released by the atria of the heart in response to high blood volume. It reduces the water, sodium, and adipose concentration in the circulatory system and thus reduces blood pressure. So, the correct answer is option C.