In a classic field study of deindividuation, research assistants were positioned at different houses on Halloween. At randomly selected houses, the assistants were instructed to reduce children's' anonymity by asking them what their names were and where they lived; at other houses, the assistants did not ask these questions.
In this example, what type of variable best describes the assistants' instructions to reduce anonymity (or not)?

the economic difference between the three colonial regions. shipbuilding, whaling, fishing, and trapping where also main factors to the economy. the southern regional colonies economy was based on sugarcane, rice, cotton, tobacco, and indigo.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.