Dr. Lloyd is conducting research to see if people are more or less willing to help someone who has fallen if another person is present. As part of this controlled situation, the researcher uses a(n) , who pretends to be an uninvolved bystander.

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska

what is the 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.  

answer; role- taking;