Democratic and Republican respectively.
Green and Libertarian are minority parties and Independent is well a single person.
Answer:
The nucleus contains protons & electrons
Explanation:
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)