Select the word from the list that best fits the definition a set of people who interact on the basis of shared expectations and who possess some degree of common identity.

A group is a set of people who interact on the basis of shared expectations and who possess some degree of common identity.

Group

Explanation:

A number of things or people that are together at one place or time or a set of people having same aims and interests and organise themselves to act or work together is called a group. League, body and organisation are its synonyms.

Example: The workers work in groups to solve complex problems.  

He is one of the important person in his age group.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

there are indirect ways of affecting state laws   by with holding funding's. and that's why we have a 55mph speed on the high way with a design of 70mph speed.