Answer:
Rahul is given a dollar by his father for regularly cleaning his room.
Step-by-step explanation:
Positive reinforcement is the term given to the positive rewards and attitudes shown towards any task completed by an individual. The positive feedback and rewards helps in the reoccurrence of the behavior and it helps in strengthening the attitude of the person. From the given situations, the selected situation is the example of positive reinforcement. Here Rahul gets the reward in the form of a dollar after he completes cleaning his room.