How did Upton Sinclair contribute to the Progressive movement? O He invented new ways to mass-produce goods. O He helped take pictures of laborers working in canneries. O He fought for more pay for workers in automobile factories. O He wrote a novel that exposed problems with how meats were processed.

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.  

answer; silence;