Bill is a fisherman on the Gulf Coast, and he has noticed that over the past several years, the shrimp population has grown smaller. He wants to come up with a way to keep fishing for shrimp, but at the same time, he doesn't want the shrimp numbers to drop any further. How could Bill accomplish this? A) Keep fishing for shrimp, but at a different location. B) Stop fishing for shrimp to let the population rebound. C) Keep fishing for shrimp, but start fishing for other fish as well. D) Keep fishing for shrimp, but at a rate that lets the shrimp population start to grow again.