Answer:
C) spaced-responding DRL
Step-by-step explanation:
Spaced-responding DRL: In psychology, the term "spaced-responding DRL" is described as one of the variants of the "standard DRL" procedure and is being utilized whereby reinforcement is given following a specific response and if that specific response has been isolated from the former response through at least a fixed-minimum "time interval".
In the question above, the given statement represents that Tommy's parents are using spaced-responding DRL.