The correct answer is B. There are no bones
Explanation:
A cartilaginous fish is composed mainly of cartilage, which is a soft and elastic tissue that provides fishes support, protection and movement. Indeed, in cartilaginous fish, the cartilage replaces the bones that are part of the skeleton of regular fishes and other animals. Besides this, it is common cartilaginous fish have fins, scales, and jaw, this includes animals such as sharks and rays. According to this, in a cartilaginous fish, there are no bones (option b) because their skeleton and body contain cartilage but no bones.
