When Chris first taught his dog Fluffy to sit, he used a treat every time Fluffy sat on command. Later on, Chris used vocal rewards, such as "good dog!" Because the treat has innate nutritional, or biological, value to the dog, the treat in this scenario represents the Blank.

Primary reinforcer

Explanation:

Primary reinforcer is the reinforcer that is used for fulfilling biological requirements or needs in the form of rewards.  These reinforcers do not require pre-learning or potential .Example of primary reinforcer -food, water, shelter etc.

According to the question, treat is considered as primary reinforcer which is  achieved by Fluffy because it satisfied his biological needs when he performed sitting activity as per Chris's command.

ya i know i wanna was a good night i wanna was a good night i love y’all bye is your address again call tomorrow morning i love ya bye hi hi i’m going crazy about going to the school and i don’t know if y’all want me or not going tomorrow and i’ll tell you what i’m doing and i’ll y’all with this i’m gonna was a really bad thing to say i don’t think i can but i’ll give ya my friend tomorrow night i love you and y’all so i don’t have a lot to say about you haha is this what time you should be home and i’ll give ya my number so i’m sorry i’ll call y’all bye love ya hey

answer; i believe the correct answer is (general);