Answer:
Ope-rant, reinforcing stimulus
Explanation:
Ope-rant is a process through which behavior has been changed with its consequences. But when an ope-rant occur then the response will be free and can occur again without ant problem. Other ope-rant are not available for every time.
This ope-rant is limited and not free from any obstacle or problem. Through ope-rant, the chances of the behavior will increase. There are many reinforcing stimuli present like a bell, tokens, money, TV serials, etc. These stimuli increase desirable behavior and help in reducing unwanted behavior.