Mrs. graham is the principal of a high school. she enforces the practice of pop quizzes in the school because she knows that students will be more likely to study if they cannot predict when they will be tested. in this scenario, mrs. graham relies on a schedule in operant conditioning to enforce a desired behavior in her students. a) fixed-ratio b) variable-ratio c) fixed-interval d) variable-interval

D)

Explanation:

She relies on a variable-interval schedule which is considering intervals or period that is not predictable and that students cannot predict when they will be tested because she thinks that those quizzes in the school will be the best way for them to study more and be prepared in any moment.

After this reinforcement schedule they will be rewarded with their grades, in this case, as the response of their learning because of the quizzes.

answer; ///i believe that the correct answer is because the house and senate frequently pass different versions of the same bill;

the answer your looking for is c. : )