Final answer:
The simplest way to train discrimination in operant conditioning involves reinforcing an operant in one situation and withholding reinforcement in other settings.
Step-by-step explanation:
The simplest way to train discrimination in operant conditioning involves reinforcement of an operant in one situation but withhold reinforcement for the operant in other settings. This is known as stimulus discrimination. By reinforcing the behavior in one specific context and not reinforcing it in other similar contexts, the organism learns to distinguish between the stimuli and only respond to the conditioned stimulus.