Harold catches fish throughout the day at unpredictable intervals. Which reinforcement schedule is this? variable interval variable ratio fixed ratio fixed interval?

Answer:variable interval

Explanation:

In operant conditioning, a variable-interval schedule is defined as that schedule in which a response is received after unpredicted time, because reinforcement has been administered in diffrent non fixed times. The response is slow and steady. Variable means non fixed time which means reinforcement can occur at any time, using various different time zone. Interval refers to time hence this means reinforcement is administered at various times.