After about an hour of basking in the sun, the body temperature of the marine iguana reaches 37°c, and the animal dives into the water to feed. in the water, its body temperature rapidly drops, and the iguana must return to the rocks to warm up. this process is an example of

The marine iguana is a unique animal that basks in the sun. But once his body temperature reaches 37°C, the animal dives into the water to feed. When its body temperature dropped, the iguana goes back to rocks to warm up. This process is an example of b. negative feedback.

Negative feedback slows down or shuts off of a  process when a set point is reached.