Final answer:
In classical conditioning, the correct order of components in the scenario of a dog wagging its tail to a squeaky door is B: Conditioned Stimulus (squeaky door), Unconditioned Response (tail wagging to owner or walk), Conditioned Response (tail wagging to door), and Unconditioned Stimulus (owner or walk).
Step-by-step explanation:
In the scenario where the door squeaks loudly and soon thereafter the dog begins wagging its tail to the sound, we can identify the classical conditioning components as follows: The Conditioned Stimulus (CS) is the squeaky door sound, the Unconditioned Stimulus (US) is the person entering through the door which the dog associates with companionship or a walk, the Conditioned Response (CR) is the tail wagging in response to the squeaky door, and the Unconditioned Response (UR) is the tail wagging in response to seeing their owner or going for a walk. Therefore, the correct order is B: CS, UR, CR, US.