[ Brainliest ] ( please answer)

Which of the following describes and example of a positive feedback loop?

A. When we are kids, our heart rates are really slow and they just continue to get
faster and faster as we grow older. We are adding to the set amount every day.

B. During childbirth, females release oxytocin, a hormone that intensifies contractions. More contractions equals more oxytocin and this cycle continues until the child is born. The body adds more and more oxytocin.

C. When we eat a donut, our body works to add more and more sugar to our blood. We want to continue to increase the amount of sugar in our blood to stay
healthy

D. When we eat a donut, our body works to pull the sugar out of our blood to ensure we have the proper blood sugar levels. If we don't eat for awhile, our body works to add sugar from our reserves into our blood to ensure we have proper levels.