Answer:
classical conditioning
Explanation:
The cat's behavior when it hears the sound of the can opener is a result of classical conditioning. Classical conditioning is a learning process whereby a conditioned stimulus such as the sound of a can opener becomes associated with an unrelated unconditioned stimulus to produce a conditioned response such as the running of the dog to the kitchen.
The behaviour of George's dog is an example of classical conditioning, the dog now associates the sound of can opener to the making of tuna fish sandwich.