Which scenario exemplifies a continuous schedule of reinforcement (CRF)?

A continuous schedule of reinforcement (CRF) occurs when a behavior is reinforced every time it is exhibited. In this scenario, Mike receives a point each time he raises his hand. This means that every instance of the behavior is reinforced without any conditions or limitations. This type of reinforcement is typically used to establish or strengthen a new behavior, making it more likely for the behavior to occur again in the future.

The other choices depict variations of reinforcement schedules. For example, receiving points after every 3rd raise of his hand indicates a fixed ratio schedule, where reinforcement is provided after a set number of responses. Receiving 2 points after multiple raises of his hand introduces a different criterion for reinforcement that is not continuous. Lastly, receiving points only after class periods without problem behavior represents a time-based schedule that does not provide reinforcement for every instance of the desired behavior. Thus, these scenarios do not represent a continuous schedule of reinforcement.