Are detention effective? explain your thinking

It is been said that if a student violates or breaches a policy or rule must be taken for such disciplinary action as it would serve as a consequence for a certain undesirable act. It would be considered that detention instills self-realization that is beneficial to the student's development and learning.

: b : o   : 0 ; b : - )  

: b: b: b: b: b: b: b: b: b

the answer is b. legendary founder of thebes