[Solved] Cephalization,the clustering of neurons and interneurons in the anterior part of the animal,is apparent in A)Hydra. B)cnidarians. C)Planaria. D)sea stars. Electric Shocks: A sudden discharge of electricity through a part of the body, used in some experimental settings to study pain, learning, and behavior. Sexual Attraction: The feeling of being attracted to someone in a way that is erotic or sexual in nature. Systematic Desensitization: A therapy technique used to reduce phobia or anxiety through gradual exposure to the feared object or situation. Profoundly Relaxed: A deep state of calmness or tranquility, often achieved through meditation or relaxation techniques.