Answer :
Answer:
C) fixed-interval
Explanation:
Based on the information provided within the question it can be said that the schedule that represents this situation is a fixed-interval schedule. This is an operant conditioning technique in which the reinforcement is delivered only after a specific amount of time passes. Since the mail is delivered once every 24 hours then it is reinforced at a specific time every 24 hours. Meaning it is a fixed-interval schedule.
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