Eduardo's fishing behavior aligns with a variable ratio reinforcement schedule, where rewards occur unpredictably, promoting persistent responding. So, the correct choice is option d.
Eduardo's fishing behavior, where he leaves his line in the water until he feels a tug, aligns with the concept of intermittent reinforcement, specifically the d. variable ratio schedule. Therefore, the correct choice is option d.
In variable ratio reinforcement, rewards are provided after an unpredictable number of responses. Eduardo does not receive a tug every time he puts his line in the water (like continuous reinforcement); instead, the tugs occur randomly, making the reinforcement schedule variable.
This type of reinforcement is known for promoting high and steady rates of responding, as individuals persist in the behavior due to the uncertainty of when the next reinforcement will occur. Variable ratio schedules are common in activities like gambling and contribute to the development of persistent and resistant behaviors.