The answer that best completes the statement above is POSITIVE REINFORCEMENT IN OPERANT CONDITIONING. From the term itself operant conditioning, this is when behavior is being controlled or influenced by a certain consequence. Operant conditioning can be of different types such as positive reinforcement, negative reinforcement, positive punishment, and negative punishment. In Jennifer's case, this can be classified as positive reinforcement since the stimulus being used encourages her to do the same action again in the future.