Answer:
The correct answer is D. All of the above
Step-by-step explanation:
Salt exist worldwide and are commonly found in estuaries. Many animals depend on salt marshes for their survival.
Salt marshes provide critical nurseries for many fishes like winter flounder that comes in marsh water and about 70% of commercially available fish use salt marshes at some point in their life.
Salt marshes are one of the most nutrient-rich ecosystem so it provides a breeding ground for many animal species like fishes, shellfish, crabs, etc. Animals in salt marshes like crabs depend on this ecosystem to get protection from predators. So the right answer is D.