In Mr Medeiros's Classroom,students Are Given Play Money Each Time They

Multiple Choice

In Mr. Medeiros's classroom,students are given play money each time they turn in an assignment; they receive additional amounts of money if the assignment is turned in on time and if it is done correctly. At the end of each week,students can use their "money" to purchase special privileges (free time,special privileges,etc.) . Mr. Medeiros's approach can best be characterized as:

A) Intermittent reinforcement.
B) A group contingency.
C) A contingency contract.
D) A token economy.