Divisions of labor is practiced because

Division of labor is essential to economic progress because it allows people to specialize in particular tasks. This specialization makes workers more efficient, which reduces the total cost of producing goods or providing a service. Additionally, by making people become skilled and efficient at a smaller number of tasks, division of labor gives people time to experiment with new and better ways of doing things.

the president has the power to appoint federal judges, ambassadors, and other "principal officers” of the united states, subject to senate confirmation of such appointments.

answer; /// i believe the correct answer is (when one group has an extremely high score at pretest;