A parent is trying to decrease a child’s swearing behavior. For every hour that the child goes without swearing, the parent reinforces the absence of swearing by reading to the child. If the child swears, the parent does not give the child attention and the child has to wait another hour for a story. Which differential reinforcement procedure is the parent using?
a) DRA​
b) DRL​
c) DRO​
d) DRI