MCQOPTIONS
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				| 1. | 
                                    A ________________ reinforcer is a stimulus or event that is naturally or inherently reinforcing for a given species, such as food, water, or other biological necessities. | 
                            
| A. | positive | 
| B. | negative | 
| C. | primary | 
| D. | secondary | 
| Answer» D. secondary | |