Define positive reinforcement, negative reinforcement, positive punishment, and negative punishment in your own words for someone who does not know what these terms mean.

the answer would be:

b. race

social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they liv

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.