Fred's Parents Are Very Inconsistent with Their Childrearing Rules

Fred's parents are very inconsistent with their childrearing rules.Most of the time Fred can climb on the furniture but sometimes he is punished.Fred's parents can't understand why he isn't a better-behaved child.Fred's parents are reinforcing his negative behaviors on a _____.

A) fixed-ratio schedule
B) fixed-interval schedule
C) partial-reinforcement schedule
D) continuous reinforcement schedule