School principal announced in ameeting that every month there will an inter-class capetition to check the cleanliness, discipline and decoration of class board. All the class techers requested the students that each one of you must take care of clanliness, didcipline and decoration. But miss Aditi, formed three them in class and made them incharge of cleanliness, discipline and decoration, there was a spirit or unity and harmony among the students and al members suported each other as a result Miss Aditi's class got best class trophy. Identify the principle of management used by Miss Aditi.

Explanation

Principle of "Espirit De corps".