In their 1961 paper on instinctive drift, the brelands determined that three assumptions most skinnerian behaviorists believed in were not actually true. which is one of the assumptions that were nottrue?

a) the animal comes to the laboratory a tabula rasa, or "blank slate," and can therefore be taught anything with the right conditioning.
b) differences between species of animals are insignificant.
c) all responses are equally able to be conditioned to any stimulus.
d) all of these were not true

d) All of these were not true

Explanation:

All the options above were all questioned by the Brelands. Instinctive drift as coined by Keller and Marian Breland who were former students of B. F skinner, asserted that operant conditioning theory wasn't true after their work on instinctive drift. Instinctive drift, a direct opposition to the operation conditioning theory of Skinner since an animal could still revert to unconscious behaviour after learning under operant conditioning.

the answer is d. amendments.