They spread diseases to the Native Americans, and since they had never experienced any similar diseases they quickly died
Answer
Its Plymouth, I submitted it and got it correct.
The answer to this question is <span> fixed ratio
In a </span> fixed ratio schedule of reinforcement, it requires <span>subjects to provides a set number of responses and a reward will be given after the completion of a certain numbers. Because of the high certainty, we will tend to receive high and steady rate of response if we use this type of schedule.</span>