Plantation was dependent on Georgia's climate. The humidity and fertile soil resulted in an abundance of plants such as cotton, tobacco, and sugar. Farming was the main thing in Georgia back then, and most of the rich would by off these lands for profit of the crops.
When we're substracting the lowest score in a dataset from the highest score in the dataset, we're basically calculating the range of the dataset. This tells us wher all the values of a dataset will fall in.
What psychology commonly studies is age, sleep patterns and aggression.
Human origins are therefore not the answer.
The correct answers are a) range and d) human origins.