Concept:Stimulus-Response theory states that learning occurs by strengthening the connection between a stimulus and a response.Explanation:This theory was proposed by E.L. Thorndike. He is known for his law of effect and trial-and-error learning. The behaviorist approach views learning as a process of conditioning. Thorndike’s work focused on how rewards and punishments shape behavior. In contrast, Gestalt theory emphasizes perception of wholes, not stimulus-response bonds. Therefore, the correct proponent is Thorndike.Answer:A. Thorndike