The answer is: A. Ivan Pavlov
Pavlov was the researcher who first popularized the classical conditioning (where a certain conditioned response is created by associating a certain situation with a conditioned stimulus)
Counterconditioning was developed in order to reverse or reduce the effete of classical conditioning (usually carried out by enforcing positive reinforcement to the subjects)
I believe it is the african americans because people were prejudiced against both groups of people.
Answer:
D. The federal government can only function effectively if it has the ability to collect taxes.
