You Are Giving a Lecture on Negative Feedback Loops to a Group

Multiple Choice

You are giving a lecture on negative feedback loops to a group of high-school students. Which analogy for negative feedback would be most effective in your lecture?

A) A stick of dynamite-you light the fuse and then it explodes
B) A runaway train, picking up speed as it travels downhill until it derails and crashes
C) Scratching a mosquito bite and having it itch more and more
D) The price of pizza a local shop charges-if it's set too high, customers go elsewhere and the shop's sales fall