Jared Is a Stay-At-Home Dad Who Takes Care of His

Multiple Choice

Jared is a stay-at-home dad who takes care of his five-year-old daughter Olivia. Olivia is hyperactive and does not often listen to Jared. Jared is trying to find new ways to get his daughter to brush her teeth, which she always refuses to do. Jared has come up with the solution to give Olivia a sticker every three times she brushes her teeth without him telling her to.
-Jared is giving Olivia a sticker according to a ____ schedule.

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