In classical conditioning, the neutral stimulus becomes a conditioned stimulus after being paired with an unconditioned stimulus. This transformation leads to a learned responses, demonstrated by Pavlov's experiments with dogs. The conditioned stimulus elicits a specific response even without the presence of the unconditioned stimulus. ;
In classical conditioning, a neutral stimulus transforms into a conditioned stimulus after being paired with an unconditioned stimulus. This was famously demonstrated by Ivan Pavlov, where a bell became a conditioned stimulus for dogs. Therefore, the correct answer is A. Conditioned stimulus.
;