The use of insulin in the body is an example of what

a) a negative feedback loop
b) a positive feedback loop
c) a nonliving
d) digestion

a) a negative feedback loop

When the concentration of glucose in the blood increases, the pancreas secretes insulin, which stimulates the formation of glycogen from glucose. As the concentration of glucose in the blood begins to decrease, the pancreas detects this change, and stops secreting insulin into the bloodstream.