The insufficient blood supply in the human body is referred as

The correct answer is A) Ischemia.

Ischemia refers to the insufficient supply of blood to a particular organ or tissue in the body. It can be caused by a variety of factors, including blood clots, atherosclerosis (hardening of the arteries), and other conditions that narrow or block blood vessels. Ischemia can lead to tissue damage or death if left untreated. Hyperemia, on the other hand, refers to an excess of blood in a particular area, while hemorrhage refers to bleeding from a ruptured blood vessel.