An animal's behavior is based on its instincts. this statement would most likely come from a(n)
a. ethologist
b. comparative behaviorist

An animal's behavior is based on its instincts. This statement would most likely come from an Ethologist. Ethologists are involved in the study of animal behavior, it falls under the study of Zoology. This is where common animal aggression, mating habits, and communication are observed by these types of scientists.