Body is eel like in___________?

Explanation

Cyclostomes, such as lampreys and hagfishes, have long, eel-like bodies and lack paired fins. Chondrichthyes and Osteichthyes include many body forms, but their typical textbook distinction is cartilaginous and bony fishes, not an eel-like body. Students may choose c because it includes some elongated bony fishes, but the group characteristic points to Cyclostomata.