Although the results are mixed, _______ has often been used by teachers who are eager to instill order in an unruly classroom.
a. physical punishment
b. programmed learning
c. a token economy
d. biofeedback training

Respuesta :

C.  a token economy.
basically meaning that rewards and punishment shape behavior.
in a lot of schools teachers will give out tokens or points to students that behave so that they will show these actions more. 
Q&A Education