In the following sentence, which word is the abstract noun? quincy insisted that each one of his team members demonstrate loyalty. a. quincy b. loyalty c. members d. team

The answer to this is B (loyalty).  Abstract nouns are nouns that are not tangible and that are more qualities and concepts.  In this sentence, all the other answer options were tangible/concrete nouns and you could touch all of them if you needed to.  You can not touch or use one of your senses to detect loyalty.

Is there more info you can give?