MrsJis Trying to Get Her Third-Grade Students to Remember to Have

Multiple Choice

Mrs.J.is trying to get her third-grade students to remember to have their homework signed by a parent before bringing it to class.Students who remember every day for a month receive a gift card from a local bookstore.This is an example of a(n)

A) consumable reinforcer.
B) activity reinforcer.
C) manipulative reinforcer.
D) possessional reinforcer.