The right option is; A. positive reinforcement
Positive reinforcement involves adding a pleasant stimulus after a behavior which makes the behavior to likely take place again in the future. When a desired reward or event occurs after an action, that specific behavior or response will be enhanced. From the question, positive reinforcement is the type of operant conditioning that is occurring in the scenario. There is addition of a reinforcing stimulus (Roland drinks a bottle of cold water) following a behavior (thirst). The addition of the stimulus brings a desired outcome because he feels refreshed after taking the water, and it increases the likelihood that the behavior will occur again in the future.
