Question 17 Q: 17 A stimulus is defined as Options A: a change in behavior brought about by alterations of the physical environment. B: a change in the environment that can affect behavior. C: a change in the environment that elicits a response with or without prior conditioning. D: any environmental event exclusive of private events. Save Question Show Answer Discussion 0 Clear Discussion Most voted Newest No comments yet. Be the first to comment. Post Be respectful. No spam. Correct Answer: B