When a group member exhibits a unique set of skills or behavioral patterns that serve specific functions within the group, that member has assumed a?

The answer is role. It is a set of associated behaviors, rights and obligations as intellectualized by actors in a social situation. It is mostly well-defined as an expected or free or continuously changing behavior and may have an assumed individual social status or social position.

answer; fair labor and standard act;

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.