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.

hi there!

moors is essentially another word for muslims.

the moors invaded spain around year 700, during their time ruling spain the muslims promoted religious tolerance (moors tolerated jews who were viewed as outcasts by northerners), the moors as well had a great impact on their language, and architecture (palaces were created).

i hope this !

answer; dead end or culdesac;