What reference was used to make us constitution.

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.  

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hope this !

answer; soren kieregaard was a 19th century danish philosopher;

answer; with few regulations protected the prices of crops which made farmers leave their farms and migrate to the big cities to work in factories;