"Children of undocumented immigrants cannot be denied access to public schools by federal law, regardless of the immigration status of the parents, as held by the US Supreme Court in"

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; archaeologists;

answer; not counted as an offense known to the police;