Final answer:
Pavlov's famous experiment stimulated the salivation reflex in dogs, which is a part of the digestive process, through classical conditioning.
Step-by-step explanation:
In the famous experiment conducted by Ivan Pavlov, he demonstrated that the salivation reflex of dogs could be stimulated through classical conditioning. Initially, Pavlov observed the dogs salivating as a natural, unconditioned response to food (an unconditioned stimulus). He then sounded a bell (a conditioned stimulus) whenever food was presented. Through repetition, the dogs learned to associate the bell with food, and began to salivate at the sound of the bell alone, demonstrating a conditioned response. This conditioning targeted the salivation reflex, which is part of the digestive process where the salivary glands produce saliva in response to sensory experiences associated with eating.