Answer:
Pavlov's Dogs and Discovery of Classical Conditioning. Pavlov's dog experiments played a critical role in the discovery of one of the most important concepts in psychology. While it was originally discovered quite by accident, these famous experiments led to the discovery of classical conditioning.
Explanation:
Honestly, I doubt a teacher can even give an actual grade for these because these are extremely debatable to people and are more useful just for psychiatric testing.
If you feel that your answer works, you can always right next to it and explain your reasoning!
At the end of the play, they feel that macbeth is a murderous tyrant, but at the beginning they though he was a brave good man