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The correct answer for anyone who may still need it is: A. The predictive value of a stimulus influences whether or not a behavior will occur.
The psychologist Robert Rescorla proposed a cognitive explanation of classical conditioning. In a 1972 classical conditioning study, he showed that an animal can learn the predictability of an event. Rescorla demonstrated that in classical conditioning the more predictable the association, the stronger the conditioned response
Robert Rescorla's demonstrated that the predictive value of a stimulus influences whether or not a behavior will occur. Correct answer: A