The correct option is
D Saw Fish
D. Saw Fish
Reason: Sawfishes are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension. Sharp transverse teeth are lined there, arranged in a way which resembles a saw. That is why they are known as Carpenter shark. Some of the species are considered as one of the largest fish. They are found worldwide in tropical and subtropical regions in coastal marine and brackish estuarine waters, as well as freshwater rivers and lakes. Pristis is a genus of sawfish of the family Pristidae. Sawfish have declined drastically and all species are considered seriously threatened today. So the correct option is D.