At the Beginning of the Semester, the Humanities Instructor Explains

Multiple Choice

At the beginning of the semester, the humanities instructor explains that there will be ten surprise quizzes over the semester, so students are strongly encouraged to keep up with their reading and to attend every class. The humanities instructor is using a _____ schedule of reinforcement to encourage studying and class attendance.

A) variable-ratio
B) fixed-interval
C) fixed-ratio
D) variable-interval